From 7e43ae8d200a7da15ad458f5bb83582d0e389ce7 Mon Sep 17 00:00:00 2001 From: Abhinav Dronamraju Date: Mon, 27 Nov 2017 16:40:37 +0530 Subject: Merge --- help/en_US/hamming.xml | 48 ++ help/en_US/hanning.xml | 27 +- help/en_US/hilbert1.xml | 2 +- help/en_US/master_help.xml | 870 +++++++++++---------- help/en_US/scilab_en_US_help/JavaHelpSearch/DOCS | Bin 23582 -> 13071 bytes .../scilab_en_US_help/JavaHelpSearch/DOCS.TAB | Bin 3723 -> 1735 bytes .../en_US/scilab_en_US_help/JavaHelpSearch/OFFSETS | Bin 1518 -> 834 bytes .../scilab_en_US_help/JavaHelpSearch/POSITIONS | Bin 100456 -> 56223 bytes help/en_US/scilab_en_US_help/JavaHelpSearch/SCHEMA | 2 +- help/en_US/scilab_en_US_help/JavaHelpSearch/TMAP | Bin 26760 -> 26624 bytes help/en_US/scilab_en_US_help/jhelpmap.jhm | 1 + help/en_US/scilab_en_US_help/jhelptoc.xml | 1 + 12 files changed, 555 insertions(+), 396 deletions(-) create mode 100644 help/en_US/hamming.xml (limited to 'help/en_US') diff --git a/help/en_US/hamming.xml b/help/en_US/hamming.xml new file mode 100644 index 0000000..9a072e8 --- /dev/null +++ b/help/en_US/hamming.xml @@ -0,0 +1,48 @@ + + + + + + + + hamming + Return the filter coefficients of a Hamming window of length M + + + + + Calling Sequence + + hamming (M) + hamming (M, "periodic") + hamming (M, "symmetric") + + + + + Parameters + + M: + real scalar, which will be the length of hamming window + + + + + Description + +Return the filter coefficients of a Hamming window of length M. +If the optional argument "periodic" is given, the periodic form of the window is returned. This is equivalent to the window of length M+1 with the last coefficient removed. The optional argument "symmetric" is equivalent to not specifying a second argument. + + + diff --git a/help/en_US/hanning.xml b/help/en_US/hanning.xml index dc1e475..5350656 100644 --- a/help/en_US/hanning.xml +++ b/help/en_US/hanning.xml @@ -17,7 +17,32 @@ hanning - + Return the filter coefficients of a Hanning window of length M + + + Calling Sequence + + hanning (M) + hanning (M, "periodic") + hanning (M, "symmetric") + + + + + Parameters + + M: + real scalar, which will be the length of hanning window + + + + + Description + +Return the filter coefficients of a Hanning window of length M. +If the optional argument "periodic" is given, the periodic form of the window is returned. This is equivalent to the window of length M+1 with the last coefficient removed. The optional argument "symmetric" is equivalent to not specifying a second argument. + + diff --git a/help/en_US/hilbert1.xml b/help/en_US/hilbert1.xml index 3d4ab42..765d670 100644 --- a/help/en_US/hilbert1.xml +++ b/help/en_US/hilbert1.xml @@ -45,7 +45,7 @@ Description -h = hilbert (f) computes the extension of the real valued signal f to an analytic signal. If f is a matrix, the transformation is applied to each column. For N-D arrays, the transformation is applied to the first non-singleton dimension. +h = hilbert1 (f) computes the extension of the real valued signal f to an analytic signal. If f is a matrix, the transformation is applied to each column. For N-D arrays, the transformation is applied to the first non-singleton dimension. real (h) contains the original signal f. imag (h) contains the Hilbert transform of f. diff --git a/help/en_US/master_help.xml b/help/en_US/master_help.xml index b1dc7df..29bb0db 100644 --- a/help/en_US/master_help.xml +++ b/help/en_US/master_help.xml @@ -1,202 +1,244 @@ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + 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b/help/en_US/scilab_en_US_help/JavaHelpSearch/OFFSETS index 44b7b1f..0fd7aff 100644 Binary files a/help/en_US/scilab_en_US_help/JavaHelpSearch/OFFSETS and b/help/en_US/scilab_en_US_help/JavaHelpSearch/OFFSETS differ diff --git a/help/en_US/scilab_en_US_help/JavaHelpSearch/POSITIONS b/help/en_US/scilab_en_US_help/JavaHelpSearch/POSITIONS index 2f0feea..5d4fac0 100644 Binary files a/help/en_US/scilab_en_US_help/JavaHelpSearch/POSITIONS and b/help/en_US/scilab_en_US_help/JavaHelpSearch/POSITIONS differ diff --git a/help/en_US/scilab_en_US_help/JavaHelpSearch/SCHEMA b/help/en_US/scilab_en_US_help/JavaHelpSearch/SCHEMA index 677736a..e6c083a 100644 --- a/help/en_US/scilab_en_US_help/JavaHelpSearch/SCHEMA +++ b/help/en_US/scilab_en_US_help/JavaHelpSearch/SCHEMA @@ -1,2 +1,2 @@ JavaSearch 1.0 -TMAP bs=2048 rt=1 fl=-1 id1=1967 id2=1 +TMAP bs=2048 rt=1 fl=-1 id1=2335 id2=1 diff --git a/help/en_US/scilab_en_US_help/JavaHelpSearch/TMAP b/help/en_US/scilab_en_US_help/JavaHelpSearch/TMAP index 067ca95..ea3dfe8 100644 Binary files a/help/en_US/scilab_en_US_help/JavaHelpSearch/TMAP and b/help/en_US/scilab_en_US_help/JavaHelpSearch/TMAP differ diff --git a/help/en_US/scilab_en_US_help/jhelpmap.jhm b/help/en_US/scilab_en_US_help/jhelpmap.jhm index add47c8..ac7ff93 100644 --- a/help/en_US/scilab_en_US_help/jhelpmap.jhm +++ b/help/en_US/scilab_en_US_help/jhelpmap.jhm @@ -83,6 +83,7 @@ + diff --git a/help/en_US/scilab_en_US_help/jhelptoc.xml b/help/en_US/scilab_en_US_help/jhelptoc.xml index 4db2aa2..dda12cb 100644 --- a/help/en_US/scilab_en_US_help/jhelptoc.xml +++ b/help/en_US/scilab_en_US_help/jhelptoc.xml @@ -83,6 +83,7 @@ + -- cgit From 9539b5efb5ccf665a1cc4b8e814e96460b22e0ab Mon Sep 17 00:00:00 2001 From: Abhinav Dronamraju Date: Tue, 28 Nov 2017 14:53:58 +0530 Subject: New functions and help files generated --- help/en_US/arch_test.xml | 73 +++++++++++++++++++++ help/en_US/detrend1.xml | 51 ++++++++++++++ help/en_US/master_help.xml | 4 ++ help/en_US/periodogram.xml | 42 +++++++++++- help/en_US/scilab_en_US_help/JavaHelpSearch/DOCS | Bin 13071 -> 13367 bytes .../scilab_en_US_help/JavaHelpSearch/DOCS.TAB | Bin 1735 -> 1769 bytes .../en_US/scilab_en_US_help/JavaHelpSearch/OFFSETS | 14 ++-- .../scilab_en_US_help/JavaHelpSearch/POSITIONS | Bin 56223 -> 57620 bytes help/en_US/scilab_en_US_help/JavaHelpSearch/SCHEMA | 2 +- help/en_US/scilab_en_US_help/JavaHelpSearch/TMAP | Bin 26624 -> 28672 bytes help/en_US/scilab_en_US_help/jhelpmap.jhm | 2 + help/en_US/scilab_en_US_help/jhelptoc.xml | 2 + 12 files changed, 181 insertions(+), 9 deletions(-) create mode 100644 help/en_US/arch_test.xml create mode 100644 help/en_US/detrend1.xml (limited to 'help/en_US') diff --git a/help/en_US/arch_test.xml b/help/en_US/arch_test.xml new file mode 100644 index 0000000..aa57ff0 --- /dev/null +++ b/help/en_US/arch_test.xml @@ -0,0 +1,73 @@ + + + + + + + + arch_test + perform a Lagrange Multiplier (LM) test of thenull hypothesis of no conditional heteroscedascity against the alternative of CH(P) + + + + + Calling Sequence + + arch_test(Y,X,P) + PVAL = arch_test(Y,X,P) + [PVAL, LM]= arch_test(Y,X,P) + + + + + Parameters + + P: + Degrees of freedom + PVAL: + PVAL is the p-value (1 minus the CDF of this distribution at LM) of the test + + + + + Description + +perform a Lagrange Multiplier (LM) test of thenull hypothesis of no conditional heteroscedascity against the alternative of CH(P). + + +I.e., the model is + + +y(t) = b(1) * x(t,1) + ... + b(k) * x(t,k) + e(t), + + +given Y up to t-1 and X up to t, e(t) is N(0, h(t)) with + + +h(t) = v + a(1) * e(t-1)^2 + ... + a(p) *e(t-p)^2, and the null is a(1) == ... == a(p) == 0. + + +If the second argument is a scalar integer, k,perform the sametest in a linear autoregression model of orderk, i.e., with + + +[1, y(t-1), ..., y(t-K)] as the t-th row of X. + + +Under the null, LM approximatel has a chisquare distribution with P degrees of freedom and PVAL is the p-value (1 minus the CDF of this distribution at LM) of the test. + + +If no output argument is given, the p-value is displayed. + + + diff --git a/help/en_US/detrend1.xml b/help/en_US/detrend1.xml new file mode 100644 index 0000000..783d922 --- /dev/null +++ b/help/en_US/detrend1.xml @@ -0,0 +1,51 @@ + + + + + + + + detrend1 + This function removes the best fit of a polynomial of order P from the data X + + + + + Calling Sequence + + detrend1(X,P) + + + + + Parameters + + X: + Input vecor or matrix. + P: + The order of polnomial + + + + + Description + +If X is a vector, 'detrend1(X, P)' removes the best fit of apolynomial of order P from the data X.If X is a matrix, 'detrend1(X, P)' does the same for each column in X. + + +The second argument P is optional. If it is not specified, a value of 1 is assumed. This corresponds to removing a linear trend. +The order of the polynomial can also be given as a string, in which case P must be either "constant" (corresponds to 'P=0') or "linear"(corresponds to 'P=1') + + + diff --git a/help/en_US/master_help.xml b/help/en_US/master_help.xml index 29bb0db..402f8b6 100644 --- a/help/en_US/master_help.xml +++ b/help/en_US/master_help.xml @@ -5,6 +5,7 @@ + @@ -47,6 +48,7 @@ + @@ -259,6 +261,7 @@ &acc27042e738d175d1131be40ac8443e4; &a00c7c9f2a0021ff13869dce3b90df38c; &a2801dc954ec6ac2e1c314367aab7316b; +&a1495e32bc54c2e2975785e8e2e4521bd; &aa86636858e7127f17b93747fc8f3ec30; &a2804cc9a113729444d60d8cf3c14b554; &a78af20f681c48f8ec298b379b34418b7; @@ -301,6 +304,7 @@ &a012dc78292d46d1a6bfdd411607796ae; &a4c9381ac38659e2e9ccdf89e9aec08f9; &a732f6e560fa62dcfe2137f94ce0b812b; +&aead61bf67b6895372794be69a80b5ab9; &a8e9030fad0ea16388695b20a07e04334; &a3ffbb42a185eaf6b62029b6efc883d6b; &ac93a3534190eae2db767de3935ad4fbc; diff --git a/help/en_US/periodogram.xml b/help/en_US/periodogram.xml index 8b5b2ed..5ad8738 100644 --- a/help/en_US/periodogram.xml +++ b/help/en_US/periodogram.xml @@ -17,7 +17,47 @@ periodogram - funcprot(0); + Return the periodogram (Power Spectral Density) of X + + + Calling Sequence + + [PXX, W] = periodogram (X) + [PXX, W] = periodogram (X, WIN) + [PXX, W] = periodogram (X, WIN, NFFT) + [PXX, W] = periodogram (X, WIN, NFFT, FS) + [PXX, W] = periodogram (..., "RANGE") + + + + + Parameters + + X: + data vector. If X is real-valued a one-sided spectrum is estimated. If X is complex-valued, or "RANGE" specifies "twosided", the full spectrum is estimated. + WIN: + window weight data. If window is empty or unspecified a default rectangular window is used. Otherwise, the window is applied to the signal ('X .* WIN') before computing th periodogram. The window data must be a vector of the same length as X. + NFFT: + number of frequency bins. The default is 256 or the next higher power of 2 greater than the length of X ('max (256,2.^nextpow2 (length (x)))'). If NFFT is greater than the length of the input then X will be zero-padded to the length of NFFT. + FS: + sampling rate. The default is 1. + RANGE: + range of spectrum. "onesided" computes spectrum from [0..nfft/2+1]."twosided" computes spectrum from [0..nfft-1]. + + + + + Description + +The optional second output W are the normalized angular frequencies. For a one-sided calculation W is in the range [0, pi]. If NFFT is even and [0, pi) if NFFT is odd. Similarly, for a two-sided calculation W is in the range [0, 2*pi] or [0, 2*pi)depending on NFFT. + + +If a sampling frequency is specified, FS, then the output frequencies F will be in the range [0, FS/2] or [0, FS/2) for one-sided calculations. For two-sided calculations the range will be [0, FS). + + +When called with no outputs the periodogram is immediately plotted in the current figure window. + + diff --git a/help/en_US/scilab_en_US_help/JavaHelpSearch/DOCS b/help/en_US/scilab_en_US_help/JavaHelpSearch/DOCS index 3105019..2e55114 100644 Binary files a/help/en_US/scilab_en_US_help/JavaHelpSearch/DOCS and b/help/en_US/scilab_en_US_help/JavaHelpSearch/DOCS differ diff --git a/help/en_US/scilab_en_US_help/JavaHelpSearch/DOCS.TAB b/help/en_US/scilab_en_US_help/JavaHelpSearch/DOCS.TAB index 16c3c1b..ac87aca 100644 Binary files a/help/en_US/scilab_en_US_help/JavaHelpSearch/DOCS.TAB and b/help/en_US/scilab_en_US_help/JavaHelpSearch/DOCS.TAB differ diff --git a/help/en_US/scilab_en_US_help/JavaHelpSearch/OFFSETS b/help/en_US/scilab_en_US_help/JavaHelpSearch/OFFSETS index 0fd7aff..ae19610 100644 --- a/help/en_US/scilab_en_US_help/JavaHelpSearch/OFFSETS +++ b/help/en_US/scilab_en_US_help/JavaHelpSearch/OFFSETS @@ -1,7 +1,7 @@ -j !(hC(p,AlZs挭t9rGA&ݔxXHʌTM<52TJQ; 0@VCE(CF=#3o3Qg0S[c;b1Y޸e(ƲchVeGE1PQ#'e[rj;VMH'!ni3 -%+ Q欙}wUٗ8܅ Ԙ -MgǏ6H͕*T5&1e2TvKS*e`U;bnVD**|! -#BуyV)`wΘÖuy2yWl4KréPywF-E*E ZbMlAr{T?˝:z(FȊ24`HR9"m%P,RtRI ΢G)W1K -4I9Ch̩>Vd-5ޱ|31 F8^X 4Coٿx$3c{w~qDEk]Si KGon}Rh84R;Y;+*bYkS}K_lN(~lR~oB<;tioUCpKdkOHBĜ{!W _g'ZdHf+[%Vjv/e>Yի8]}i'pV>+3a -ݷNFe[6YKIJ1-5 -o#[I. PTH9`k֜u/\=Jp!eI4e9^8)R2-O LeDq$#Ih,PQi(H ь,4eL3rء{*Vw#J1Ś9G5oF,QGQhci2T1b3d k[rj;VMH'!ni3 + T,9F˚eWj`c$Q`I6}T%tV0ԘKMd_˕SدYLIїu<9/[TRUM?#|T]k(HK= F Z +83^,E/>bdVDa72_v &/K~MC~xMd㨨=5i3÷ɱ9SxNr.u*"Ե"*lс# Kq^4:22ٴaCIJW'˝ +c|R1q Q{☜ +4I9Ch̩>Vd-5ޱ|32]F_U 66)9JWwnt}Ͽ`GfL w̯IeX7,ҚL#+翘*ұʷ* $f<'?4;^ZWnh7!mZ&45,XV"KI{G7mDj^mQGq +ߋUZ; zn{uk,TX rNo6j"KֳA1-7u5y+p\EI3.RH94R}A$.w_K \ No newline at end of file diff --git a/help/en_US/scilab_en_US_help/JavaHelpSearch/POSITIONS b/help/en_US/scilab_en_US_help/JavaHelpSearch/POSITIONS index 5d4fac0..4544947 100644 Binary files a/help/en_US/scilab_en_US_help/JavaHelpSearch/POSITIONS and b/help/en_US/scilab_en_US_help/JavaHelpSearch/POSITIONS differ diff --git a/help/en_US/scilab_en_US_help/JavaHelpSearch/SCHEMA b/help/en_US/scilab_en_US_help/JavaHelpSearch/SCHEMA index e6c083a..7d65376 100644 --- a/help/en_US/scilab_en_US_help/JavaHelpSearch/SCHEMA +++ b/help/en_US/scilab_en_US_help/JavaHelpSearch/SCHEMA @@ -1,2 +1,2 @@ JavaSearch 1.0 -TMAP bs=2048 rt=1 fl=-1 id1=2335 id2=1 +TMAP bs=2048 rt=1 fl=-1 id1=2382 id2=1 diff --git a/help/en_US/scilab_en_US_help/JavaHelpSearch/TMAP b/help/en_US/scilab_en_US_help/JavaHelpSearch/TMAP index ea3dfe8..6337674 100644 Binary files a/help/en_US/scilab_en_US_help/JavaHelpSearch/TMAP and b/help/en_US/scilab_en_US_help/JavaHelpSearch/TMAP differ diff --git a/help/en_US/scilab_en_US_help/jhelpmap.jhm b/help/en_US/scilab_en_US_help/jhelpmap.jhm index ac7ff93..4e2930e 100644 --- a/help/en_US/scilab_en_US_help/jhelpmap.jhm +++ b/help/en_US/scilab_en_US_help/jhelpmap.jhm @@ -7,6 +7,7 @@ + @@ -49,6 +50,7 @@ + diff --git a/help/en_US/scilab_en_US_help/jhelptoc.xml b/help/en_US/scilab_en_US_help/jhelptoc.xml index dda12cb..1b4fbc8 100644 --- a/help/en_US/scilab_en_US_help/jhelptoc.xml +++ b/help/en_US/scilab_en_US_help/jhelptoc.xml @@ -7,6 +7,7 @@ + @@ -49,6 +50,7 @@ + -- cgit From d97df53d72f66db206da540e909679fa863b51b6 Mon Sep 17 00:00:00 2001 From: Abhinav Dronamraju Date: Wed, 29 Nov 2017 17:34:00 +0530 Subject: Added xml files and new functions --- help/en_US/ar_psd.xml | 73 +++++++++++++++++++++ help/en_US/bilinear.xml | 52 +++++++++++++++ help/en_US/cohere.xml | 64 ++++++++++++++++++ help/en_US/diffpara.xml | 60 +++++++++++++++++ help/en_US/durbinlevinson.xml | 53 +++++++++++++++ help/en_US/fftshift1.xml | 64 ++++++++++++++++++ help/en_US/fractdiff.xml | 38 +++++++++++ help/en_US/ifftshift1.xml | 52 +++++++++++++++ help/en_US/master_help.xml | 16 +++++ help/en_US/scilab_en_US_help/JavaHelpSearch/DOCS | Bin 13367 -> 14195 bytes .../scilab_en_US_help/JavaHelpSearch/DOCS.TAB | Bin 1769 -> 1885 bytes .../en_US/scilab_en_US_help/JavaHelpSearch/OFFSETS | Bin 844 -> 874 bytes .../scilab_en_US_help/JavaHelpSearch/POSITIONS | Bin 57620 -> 61423 bytes help/en_US/scilab_en_US_help/JavaHelpSearch/SCHEMA | 2 +- help/en_US/scilab_en_US_help/JavaHelpSearch/TMAP | Bin 28672 -> 28672 bytes help/en_US/scilab_en_US_help/jhelpmap.jhm | 8 +++ help/en_US/scilab_en_US_help/jhelptoc.xml | 8 +++ 17 files changed, 489 insertions(+), 1 deletion(-) create mode 100644 help/en_US/ar_psd.xml create mode 100644 help/en_US/bilinear.xml create mode 100644 help/en_US/cohere.xml create mode 100644 help/en_US/diffpara.xml create mode 100644 help/en_US/durbinlevinson.xml create mode 100644 help/en_US/fftshift1.xml create mode 100644 help/en_US/fractdiff.xml create mode 100644 help/en_US/ifftshift1.xml (limited to 'help/en_US') diff --git a/help/en_US/ar_psd.xml b/help/en_US/ar_psd.xml new file mode 100644 index 0000000..103f0d2 --- /dev/null +++ b/help/en_US/ar_psd.xml @@ -0,0 +1,73 @@ + + + + + + + + ar_psd + Calculate the power spectrum of the autoregressive model + + + + + Calling Sequence + + [PSD,F_OUT]=ar_psd (A, V) + [PSD,F_OUT]=ar_psd (A, V, FREQ) + [PSD,F_OUT]=ar_psd (A, V, FREQ, FS) + [PSD,F_OUT]=ar_psd (..., RANGE) + [PSD,F_OUT]=ar_psd (..., METHOD) + [PSD,F_OUT]=ar_psd (..., PLOTTYPE) + + + + + Parameters + + A: + List of M=(order+1) autoregressive model coefficients. The first element of "ar_coeffs" is the zero-lag coefficient, which always has a value of 1. + V: + Square of the moving-average coefficient of the AR model. + FREQ: + Frequencies at which power spectral density is calculated, or a scalar indicating the number of uniformly distributed frequency values at which spectral density is calculated. (default = 256) + FS: + Sampling frequency (Hertz) (default=1) + Range: + 'half', 'onesided' : frequency range of the spectrum is from zero up to but not including sample_f/2. Power from negative frequencies is added to the positive side of the spectrum.'whole', 'twosided' : frequency range of the spectrum is-sample_f/2 to sample_f/2, with negative frequencies stored in "wrap around" order after the positive frequencies; e.g. frequencies for a 10-point 'twosided' spectrum are 0 0.1 0.2 0.3 0.4 0.5 -0.4 -0.3 -0.2 -0.1 'shift', 'centerdc' : same as 'whole' but with the first half of the spectrum swapped with second half to put the zero-frequency value in the middle. (See "help fftshift". If "freq" is vector, 'shift' is ignored. If model coefficients "ar_coeffs" are real, the default range is 'half', otherwise default range is 'whole'. + Method: + 'fft': use FFT to calculate power spectrum. 'poly': calculate power spectrum as a polynomial of 1/z N.B. this argument is ignored if the "freq" argument is a vector. The default is 'poly' unless the "freq" argument is an integer power of 2. + Plot type: + 'plot', 'semilogx', 'semilogy', 'loglog', 'squared' or 'db':specifies the type of plot. The default is 'plot', which means linear-linear axes. 'squared' is the same as 'plot'. 'dB' plots "10*log10(psd)". This argument is ignored and a spectrum is not plotted if the caller requires a returned value. + PSD: + estimate of power-spectral density + F_OUT: + frequency values + + + + + Description + +If the FREQ argument is a vector (of frequencies) the spectrum is calculated using the polynomial method and the METHOD argument is ignored. For scalar FREQ, an integer power of 2, or METHOD = "FFT", causes the spectrum to be calculated by FFT. Otherwise, the spectrum is calculated as a polynomial. It may be computationally more efficient to use the FFT method if length of the model is not much smaller than the number of frequency values. The spectrum is scaled so that spectral energy (area under spectrum) is the same as the time-domain energy (mean square of the signal). + + + + + Examples + + + diff --git a/help/en_US/bilinear.xml b/help/en_US/bilinear.xml new file mode 100644 index 0000000..0361759 --- /dev/null +++ b/help/en_US/bilinear.xml @@ -0,0 +1,52 @@ + + + + + + + + bilinear + Transform a s-plane filter specification into a z-plane specification + + + + + Calling Sequence + + [ZB, ZA] = bilinear (SB, SA, T) + [ZB, ZA] = bilinear (SZ, SP, SG, T) + [ZZ, ZP, ZG] = bilinear (...) + + + + + Description + +Transform a s-plane filter specification into a z-plane specification. Filters can be specified in either zero-pole-gain or transfer function form. The input form does not have to match the output form. 1/T is the sampling frequency represented in the z plane. + + +Note: this differs from the bilinear function in the signal processing toolbox, which uses 1/T rather than T. + + +Theory: Given a piecewise flat filter design, you can transform it from the s-plane to the z-plane while maintaining the band edges by means of the bilinear transform. This maps the left hand side of the s-plane into the interior of the unit circle. The mapping is highly non-linear, so you must design your filter with band edges in the s-plane positioned at 2/T tan(w*T/2) so that they will be positioned at w after the bilinear transform is complete. + + + + + Examples + + + diff --git a/help/en_US/cohere.xml b/help/en_US/cohere.xml new file mode 100644 index 0000000..677e7a9 --- /dev/null +++ b/help/en_US/cohere.xml @@ -0,0 +1,64 @@ + + + + + + + + cohere + Estimate (mean square) coherence of signals "x" and "y" + + + + + Calling Sequence + + [Pxx,freqs] = cohere(x,y,Nfft,Fs,win,overlap,ran,plot_type,detrends) + + + + + Parameters + + x: + [non-empty vector] system-input time-series data + y: + [non-empty vector] system-output time-series data + win: + [real vector] of window-function values between 0 and 1; the data segment has the same length as the window. Default window shape is Hamming. [integer scalar] length of each data segment. The default value is window=sqrt(length(x)) rounded up to the nearest integer power of 2; see 'sloppy' argument. + overlap: + [real scalar] segment overlap expressed as a multiple of window or segment length. 0 <= overlap < 1, The default is overlap=0.5 . + Nfft: + [integer scalar] Length of FFT. The default is the length of the "window" vector or has the same value as the scalar "window" argument. If Nfft is larger than the segment length, "seg_len", the data segment is padded with "Nfft-seg_len" zeros. The default is no padding. Nfft values smaller than the length of the data segment (or window) are ignored silently. + Fs: + [real scalar] sampling frequency (Hertz); default=1.0 + range: + 'half', 'onesided' : frequency range of the spectrum is zero up to but not including Fs/2. Power from negative frequencies is added to the positive side of the spectrum, but not at zero or Nyquist (Fs/2) frequencies. This keeps power equal in time and spectral domains. See reference [2]. 'whole', 'twosided' : frequency range of the spectrum is-Fs/2 to Fs/2, with negative frequenciesstored in "wrap around" order after the positivefrequencies; e.g. frequencies for a 10-point 'twosided'spectrum are 0 0.1 0.2 0.3 0.4 0.5 -0.4 -0.3 -0.2 -0.1 'shift', 'centerdc' : same as 'whole' but with the first half of the spectrum swapped with second half to put the zero-frequency value in the middle. (See "help fftshift". If data (x and y) are real, the default range is 'half', otherwise default range is 'whole'. + plot_type: + 'plot', 'semilogx', 'semilogy', 'loglog', 'squared' or 'db': specifies the type of plot. The default is 'plot', which means linear-linear axes. 'squared' is the same as 'plot'. 'dB' plots "10*log10(psd)". This argument is ignored and a spectrum is not plotted if the caller requires a returned value. + detrends: + 'no-strip', 'none' -- do NOT remove mean value from the data'short', 'mean' -- remove the mean value of each segment from each segment of the data. 'linear',-- remove linear trend from each segment of the data.'long-mean'-- remove the mean value from the data before splitting it into segments. This is the default. + + + + + Description + +Estimate (mean square) coherence of signals "x" and "y". + + +Use the Welch (1967) periodogram/FFT method. + + + diff --git a/help/en_US/diffpara.xml b/help/en_US/diffpara.xml new file mode 100644 index 0000000..be0f99c --- /dev/null +++ b/help/en_US/diffpara.xml @@ -0,0 +1,60 @@ + + + + + + + + diffpara + Return the estimator D for the differencing parameter of an integrated time series + + + + + Calling Sequence + + [D, DD] = diffpara (X) + [D, DD] = diffpara (X, A) + [D, DD] = diffpara (X, A, B) + + + + + Parameters + + X: + Input scalar or vector. + DD: + The estimators for all frequencies in the intervals described above. + D: + The mean of DD + + + + + Description + +Return the estimator D for the differencing parameter of an integrated time series. + + +The frequencies from [2*pi*a/t, 2*pi*b/T] are used for the estimation. If B is omitted, the interval [2*pi/T, 2*pi*a/T] is used. If both B and A are omitted then a = 0.5 * sqrt (T) and b = 1.5 * sqrt (T) is used, where T is the sample size. If X is a matrix, the differencing parameter of each column is estimated. + + +The estimators for all frequencies in the intervals described above is returned in DD. + + +The value of D is simply the mean of DD. + + + diff --git a/help/en_US/durbinlevinson.xml b/help/en_US/durbinlevinson.xml new file mode 100644 index 0000000..0e6cc6d --- /dev/null +++ b/help/en_US/durbinlevinson.xml @@ -0,0 +1,53 @@ + + + + + + + + durbinlevinson + Perform one step of the Durbin-Levinson algorithm.. + + + + + Calling Sequence + + durbinlevinson (C); + durbinlevinson (C, OLDPHI); + durbinlevinson (C, OLDPHI, OLDV); + + + + + Parameters + + C: + The vector C specifies the autocovariances '[gamma_0, ..., gamma_t]' from lag 0 to T. + OLDPHI: + It specifies the coefficients based on C(T-1). + OLDV: + It specifies the corresponding error. + + + + + Description + +This is an Octave function. +Perform one step of the Durbin-Levinson. +If OLDPHI and OLDV are omitted, all steps from 1 to T of the algorithm are performed. + + + diff --git a/help/en_US/fftshift1.xml b/help/en_US/fftshift1.xml new file mode 100644 index 0000000..8ce7eab --- /dev/null +++ b/help/en_US/fftshift1.xml @@ -0,0 +1,64 @@ + + + + + + + + fftshift1 + Perform a shift of the vector X, for use with the 'fft' and 'ifft' functions, in order the move the frequency 0 to the center of the vector or matrix. + + + + + Calling Sequence + + fftshift1 (X) + fftshift1 (X, DIM) + + + + + Parameters + + X: + It is a vector of N elements corresponding to time samples + DIM: + The optional DIM argument can be used to limit the dimension along which the permutation occurs + + + + + Description + +This is an Octave function. +Perform a shift of the vector X, for use with the 'fft' and 'ifft' functions, in order the move the frequency 0 to the center of the vector or matrix. + + +If X is a vector of N elements corresponding to N time samples spaced by dt, then 'fftshift1 (fft (X))' corresponds to frequencies + + +f = [ -(ceil((N-1)/2):-1:1)*df 0 (1:floor((N-1)/2))*df ] + + +where df = 1 / dt. + + +If X is a matrix, the same holds for rows and columns. If X is an array, then the same holds along each dimension. + + +The optional DIM argument can be used to limit the dimension along + + + diff --git a/help/en_US/fractdiff.xml b/help/en_US/fractdiff.xml new file mode 100644 index 0000000..c26508f --- /dev/null +++ b/help/en_US/fractdiff.xml @@ -0,0 +1,38 @@ + + + + + + + + fractdiff + Compute the fractional differences (1-L)^d x where L denotes the lag-operator and d is greater than -1. + + + + + Calling Sequence + + fractdiff (X, D) + + + + + Description + +This is an Octave function. +Compute the fractional differences (1-L)^d x where L denotes the lag-operator and d is greater than -1. + + + diff --git a/help/en_US/ifftshift1.xml b/help/en_US/ifftshift1.xml new file mode 100644 index 0000000..c281669 --- /dev/null +++ b/help/en_US/ifftshift1.xml @@ -0,0 +1,52 @@ + + + + + + + + ifftshift1 + Undo the action of the 'fftshift1' function. + + + + + Calling Sequence + + ifftshift1 (X) + ifftshift1 (X, DIM) + + + + + Parameters + + X: + It is a vector of N elements corresponding to time samples + DIM: + The optional DIM argument can be used to limit the dimension along which the permutation occurs + + + + + Description + +This is an Octave function. +Undo the action of the 'fftshift1' function. + + +For even length X, 'fftshift1' is its own inverse, but odd lengths differ slightly. + + + diff --git a/help/en_US/master_help.xml b/help/en_US/master_help.xml index 402f8b6..928bf3f 100644 --- a/help/en_US/master_help.xml +++ b/help/en_US/master_help.xml @@ -4,6 +4,7 @@ + @@ -13,6 +14,7 @@ + @@ -38,6 +40,7 @@ + @@ -50,9 +53,11 @@ + + @@ -63,6 +68,7 @@ + @@ -72,6 +78,7 @@ + @@ -95,6 +102,7 @@ + @@ -260,6 +268,7 @@ &a231328952124a7e187905e71aaf9cee0; &acc27042e738d175d1131be40ac8443e4; &a00c7c9f2a0021ff13869dce3b90df38c; +&a85e6512c560e0bf936c3beeaa098c6c9; &a2801dc954ec6ac2e1c314367aab7316b; &a1495e32bc54c2e2975785e8e2e4521bd; &aa86636858e7127f17b93747fc8f3ec30; @@ -269,6 +278,7 @@ &af8a337c857d4b373e49c0032acb1370f; &a8db037e6c34a1ac0f7db27577e08e15d; &a31f48c823b3b36a8c44e96ff54eaf66a; +&a1f0975c78250aac81c6d5a79d8c93eab; &a4965260600d5ae3055dc940551b4155a; &a203e8f0f36fcdb6d7dab204312a41134; &a33562ce8ee2b64f5e49f771f94e64714; @@ -294,6 +304,7 @@ &a1dc032779f7ba8e8f69e8f79dfb144d5; &a5bf1548e6f5419396992c7e5fee10e44; &a675cd787aff166461d9e9da55d591875; +&a2b41713030e0a16e3e381cc96ff62544; &adc56a73851265426ed0c3db40f3a0d2e; &a3d40cac540363daecb58818938d2b1d3; &ad2840257a4ded4da25428645e8a8fd22; @@ -306,9 +317,11 @@ &a732f6e560fa62dcfe2137f94ce0b812b; &aead61bf67b6895372794be69a80b5ab9; &a8e9030fad0ea16388695b20a07e04334; +&a1d56d414b955dad7a64ae7c13171931e; &a3ffbb42a185eaf6b62029b6efc883d6b; &ac93a3534190eae2db767de3935ad4fbc; &afe6460b06ca50c9c2d156ea6806d2ed9; +&a227944d1935a789cec8341413d58151d; &a52aa309fac8ef71cd8d143ac51969fe0; &aa0ecb21a4fba74cd96dd91d64d4f13ef; &a54ce5c2d68eb85b370486a8657432e59; @@ -319,6 +332,7 @@ &a61dce7ba646ca92aaf5a1ba090aa25e4; &ad146f651e2b3ae0f2c4548c9d31b9324; &a093a9f733664f253ef62c57cbfd1f345; +&ac1d05174ad6903658715873090e2337d; &ad9f3946f61509aa68a6555cc8e1e89c4; &a0b5dd6bfc7c995741ff59cb1f2e6bd9d; &a6f9f6be023cda42def4540ebe4a826ad; @@ -328,6 +342,7 @@ &a94e89cc06baa492675fb0ba33b84c454; &a19950da21e14157b78311a84cf566c31; &a997024f7f60a0e9b5b06fb25b4549196; +&a36e682243b9d539831279ec2794d4dcf; &a60063fcaf779858435eab52d0438f7c0; &a5b1b81f5a27ba264b58d0ede7bf40d6e; &aaa8fd7d64f02100f0ff4b9f5a601b502; @@ -351,6 +366,7 @@ &a6fd54fa41c0d83b890ecda9094cd757f; &a9a5ec7990aa1e0ee187582dfea2e2f18; &a6c98b32822a438724a01bbbc3c6e8972; +&ac144cb9b3a31dd3325159821e24eac51; &a414728f3a3bc742adaead017680e9eb1; &a2992435e7a3da65808422b5922e44afd; &a056e2f09f5221e8999a0fea1c1fa878d; diff --git a/help/en_US/scilab_en_US_help/JavaHelpSearch/DOCS b/help/en_US/scilab_en_US_help/JavaHelpSearch/DOCS index 2e55114..a84edbe 100644 Binary files a/help/en_US/scilab_en_US_help/JavaHelpSearch/DOCS and b/help/en_US/scilab_en_US_help/JavaHelpSearch/DOCS differ diff --git a/help/en_US/scilab_en_US_help/JavaHelpSearch/DOCS.TAB b/help/en_US/scilab_en_US_help/JavaHelpSearch/DOCS.TAB index ac87aca..f9a9626 100644 Binary files a/help/en_US/scilab_en_US_help/JavaHelpSearch/DOCS.TAB and b/help/en_US/scilab_en_US_help/JavaHelpSearch/DOCS.TAB differ diff --git a/help/en_US/scilab_en_US_help/JavaHelpSearch/OFFSETS b/help/en_US/scilab_en_US_help/JavaHelpSearch/OFFSETS index ae19610..8255fa1 100644 Binary files a/help/en_US/scilab_en_US_help/JavaHelpSearch/OFFSETS and b/help/en_US/scilab_en_US_help/JavaHelpSearch/OFFSETS differ diff --git a/help/en_US/scilab_en_US_help/JavaHelpSearch/POSITIONS b/help/en_US/scilab_en_US_help/JavaHelpSearch/POSITIONS index 4544947..80cb637 100644 Binary files a/help/en_US/scilab_en_US_help/JavaHelpSearch/POSITIONS and b/help/en_US/scilab_en_US_help/JavaHelpSearch/POSITIONS differ diff --git a/help/en_US/scilab_en_US_help/JavaHelpSearch/SCHEMA b/help/en_US/scilab_en_US_help/JavaHelpSearch/SCHEMA index 7d65376..8970d6a 100644 --- a/help/en_US/scilab_en_US_help/JavaHelpSearch/SCHEMA +++ b/help/en_US/scilab_en_US_help/JavaHelpSearch/SCHEMA @@ -1,2 +1,2 @@ JavaSearch 1.0 -TMAP bs=2048 rt=1 fl=-1 id1=2382 id2=1 +TMAP bs=2048 rt=1 fl=-1 id1=2513 id2=1 diff --git a/help/en_US/scilab_en_US_help/JavaHelpSearch/TMAP b/help/en_US/scilab_en_US_help/JavaHelpSearch/TMAP index 6337674..ed7ae27 100644 Binary files a/help/en_US/scilab_en_US_help/JavaHelpSearch/TMAP and b/help/en_US/scilab_en_US_help/JavaHelpSearch/TMAP differ diff --git a/help/en_US/scilab_en_US_help/jhelpmap.jhm b/help/en_US/scilab_en_US_help/jhelpmap.jhm index 4e2930e..b4c824f 100644 --- a/help/en_US/scilab_en_US_help/jhelpmap.jhm +++ b/help/en_US/scilab_en_US_help/jhelpmap.jhm @@ -6,6 +6,7 @@ + @@ -15,6 +16,7 @@ + @@ -40,6 +42,7 @@ + @@ -52,9 +55,11 @@ + + @@ -65,6 +70,7 @@ + @@ -74,6 +80,7 @@ + @@ -97,6 +104,7 @@ + diff --git a/help/en_US/scilab_en_US_help/jhelptoc.xml b/help/en_US/scilab_en_US_help/jhelptoc.xml index 1b4fbc8..5d9607e 100644 --- a/help/en_US/scilab_en_US_help/jhelptoc.xml +++ b/help/en_US/scilab_en_US_help/jhelptoc.xml @@ -6,6 +6,7 @@ + @@ -15,6 +16,7 @@ + @@ -40,6 +42,7 @@ + @@ -52,9 +55,11 @@ + + @@ -65,6 +70,7 @@ + @@ -74,6 +80,7 @@ + @@ -97,6 +104,7 @@ + -- cgit From 78b93a6cdf04aa8c861d4580eec8e4839bb8a255 Mon Sep 17 00:00:00 2001 From: Abhinav Dronamraju Date: Thu, 30 Nov 2017 12:05:04 +0530 Subject: TFE function added --- help/en_US/master_help.xml | 2 + help/en_US/scilab_en_US_help/JavaHelpSearch/DOCS | Bin 14195 -> 14359 bytes .../scilab_en_US_help/JavaHelpSearch/DOCS.TAB | Bin 1885 -> 1887 bytes .../en_US/scilab_en_US_help/JavaHelpSearch/OFFSETS | Bin 874 -> 877 bytes .../scilab_en_US_help/JavaHelpSearch/POSITIONS | Bin 61423 -> 62365 bytes help/en_US/scilab_en_US_help/JavaHelpSearch/SCHEMA | 2 +- help/en_US/scilab_en_US_help/JavaHelpSearch/TMAP | Bin 28672 -> 28672 bytes help/en_US/scilab_en_US_help/jhelpmap.jhm | 1 + help/en_US/scilab_en_US_help/jhelptoc.xml | 1 + help/en_US/tfe.xml | 61 +++++++++++++++++++++ 10 files changed, 66 insertions(+), 1 deletion(-) create mode 100644 help/en_US/tfe.xml (limited to 'help/en_US') diff --git a/help/en_US/master_help.xml b/help/en_US/master_help.xml index 928bf3f..9ff7294 100644 --- a/help/en_US/master_help.xml +++ b/help/en_US/master_help.xml @@ -221,6 +221,7 @@ + @@ -485,6 +486,7 @@ &a74b148e7e471bd9f170cd4dc3087d2c9; &a243b79cdb976d4f432450ea744ca236c; &a9187ccad1c55b5cd1a5a900b17f2104b; +&a62d4009c826ca50e7466327e7eaa3dde; &a805a0ed4cae04e01f29ecf5f82345622; &a6e3552f90470c430b16dca28da599068; &aff0a00518280d05c9d58a7de46b1b160; diff --git a/help/en_US/scilab_en_US_help/JavaHelpSearch/DOCS b/help/en_US/scilab_en_US_help/JavaHelpSearch/DOCS index a84edbe..f80938d 100644 Binary files a/help/en_US/scilab_en_US_help/JavaHelpSearch/DOCS and b/help/en_US/scilab_en_US_help/JavaHelpSearch/DOCS differ diff --git a/help/en_US/scilab_en_US_help/JavaHelpSearch/DOCS.TAB b/help/en_US/scilab_en_US_help/JavaHelpSearch/DOCS.TAB index f9a9626..78a675f 100644 Binary files a/help/en_US/scilab_en_US_help/JavaHelpSearch/DOCS.TAB and b/help/en_US/scilab_en_US_help/JavaHelpSearch/DOCS.TAB differ diff --git a/help/en_US/scilab_en_US_help/JavaHelpSearch/OFFSETS b/help/en_US/scilab_en_US_help/JavaHelpSearch/OFFSETS index 8255fa1..11f7b63 100644 Binary files a/help/en_US/scilab_en_US_help/JavaHelpSearch/OFFSETS and b/help/en_US/scilab_en_US_help/JavaHelpSearch/OFFSETS differ diff --git a/help/en_US/scilab_en_US_help/JavaHelpSearch/POSITIONS b/help/en_US/scilab_en_US_help/JavaHelpSearch/POSITIONS index 80cb637..a921a9b 100644 Binary files a/help/en_US/scilab_en_US_help/JavaHelpSearch/POSITIONS and b/help/en_US/scilab_en_US_help/JavaHelpSearch/POSITIONS differ diff --git a/help/en_US/scilab_en_US_help/JavaHelpSearch/SCHEMA b/help/en_US/scilab_en_US_help/JavaHelpSearch/SCHEMA index 8970d6a..a8a67ce 100644 --- a/help/en_US/scilab_en_US_help/JavaHelpSearch/SCHEMA +++ b/help/en_US/scilab_en_US_help/JavaHelpSearch/SCHEMA @@ -1,2 +1,2 @@ JavaSearch 1.0 -TMAP bs=2048 rt=1 fl=-1 id1=2513 id2=1 +TMAP bs=2048 rt=1 fl=-1 id1=2516 id2=1 diff --git a/help/en_US/scilab_en_US_help/JavaHelpSearch/TMAP b/help/en_US/scilab_en_US_help/JavaHelpSearch/TMAP index ed7ae27..8273b39 100644 Binary files a/help/en_US/scilab_en_US_help/JavaHelpSearch/TMAP and b/help/en_US/scilab_en_US_help/JavaHelpSearch/TMAP differ diff --git a/help/en_US/scilab_en_US_help/jhelpmap.jhm b/help/en_US/scilab_en_US_help/jhelpmap.jhm index b4c824f..88502e4 100644 --- a/help/en_US/scilab_en_US_help/jhelpmap.jhm +++ b/help/en_US/scilab_en_US_help/jhelpmap.jhm @@ -223,6 +223,7 @@ + diff --git a/help/en_US/scilab_en_US_help/jhelptoc.xml b/help/en_US/scilab_en_US_help/jhelptoc.xml index 5d9607e..56617b9 100644 --- a/help/en_US/scilab_en_US_help/jhelptoc.xml +++ b/help/en_US/scilab_en_US_help/jhelptoc.xml @@ -223,6 +223,7 @@ + diff --git a/help/en_US/tfe.xml b/help/en_US/tfe.xml new file mode 100644 index 0000000..0e5e35b --- /dev/null +++ b/help/en_US/tfe.xml @@ -0,0 +1,61 @@ + + + + + + + + tfe + Estimate transfer function of system with input "x" and output "y". Use the Welch (1967) periodogram/FFT method. + + + + + Calling Sequence + + [Pxx,freq] = tfe(x,y,Nfft,Fs,window,overlap,range,plot_type,detrend) + + + + + Parameters + + x: + [non-empty vector] system-input time-series data + y: + [non-empty vector] system-output time-series data + win: + [real vector] of window-function values between 0 and 1; the data segment has the same length as the window. Default window shape is Hamming. [integer scalar] length of each data segment. The default value is window=sqrt(length(x)) rounded up to the nearest integer power of 2; see 'sloppy' argument. + overlap: + [real scalar] segment overlap expressed as a multiple of window or segment length. 0 <= overlap < 1, The default is overlap=0.5 . + Nfft: + [integer scalar] Length of FFT. The default is the length of the "window" vector or has the same value as the scalar "window" argument. If Nfft is larger than the segment length, "seg_len", the data segment is padded with "Nfft-seg_len" zeros. The default is no padding. Nfft values smaller than the length of the data segment (or window) are ignored silently. + Fs: + [real scalar] sampling frequency (Hertz); default=1.0 + range: + 'half', 'onesided' : frequency range of the spectrum is zero up to but not including Fs/2. Power from negative frequencies is added to the positive side of the spectrum, but not at zero or Nyquist (Fs/2) frequencies. This keeps power equal in time and spectral domains. See reference [2]. 'whole', 'twosided' : frequency range of the spectrum is-Fs/2 to Fs/2, with negative frequenciesstored in "wrap around" order after the positivefrequencies; e.g. frequencies for a 10-point 'twosided'spectrum are 0 0.1 0.2 0.3 0.4 0.5 -0.4 -0.3 -0.2 -0.1 'shift', 'centerdc' : same as 'whole' but with the first half of the spectrum swapped with second half to put the zero-frequency value in the middle. (See "help fftshift". If data (x and y) are real, the default range is 'half', otherwise default range is 'whole'. + plot_type: + 'plot', 'semilogx', 'semilogy', 'loglog', 'squared' or 'db': specifies the type of plot. The default is 'plot', which means linear-linear axes. 'squared' is the same as 'plot'. 'dB' plots "10*log10(psd)". This argument is ignored and a spectrum is not plotted if the caller requires a returned value. + detrends: + 'no-strip', 'none' -- do NOT remove mean value from the data'short', 'mean' -- remove the mean value of each segment from each segment of the data. 'linear',-- remove linear trend from each segment of the data.'long-mean'-- remove the mean value from the data before splitting it into segments. This is the default. + + + + + Description + +Estimate transfer function of system with input "x" and output "y". Use the Welch (1967) periodogram/FFT method. + + + -- cgit From c257cd7a7e766fb89332cca4fb367904767362ed Mon Sep 17 00:00:00 2001 From: Brijeshcr Date: Thu, 30 Nov 2017 18:27:20 +0530 Subject: Help files and functions --- help/en_US/ac2rc.xml | 29 +- help/en_US/arburg.xml | 4 + help/en_US/arch_rnd.xml | 74 +++ help/en_US/arcov.xml | 24 +- help/en_US/arma_rnd.xml | 82 ++++ help/en_US/aryule.xml | 2 + help/en_US/besselap.xml | 71 +++ help/en_US/buttap.xml | 67 +++ help/en_US/cceps.xml | 23 + help/en_US/cheb.xml | 65 +++ help/en_US/cheb1ap.xml | 75 +++ help/en_US/cheb2ap.xml | 63 +++ help/en_US/cl2bp.xml | 75 +++ help/en_US/cplxreal.xml | 66 +++ help/en_US/czt.xml | 23 + help/en_US/dst1.xml | 23 + help/en_US/ellipap.xml | 68 +++ help/en_US/fft1.xml | 74 +++ help/en_US/fft21.xml | 68 +++ help/en_US/fftw1.xml | 94 ++++ help/en_US/fht.xml | 23 + help/en_US/freqs.xml | 61 +++ help/en_US/fwht.xml | 23 + help/en_US/hilbert1.xml | 23 + help/en_US/hurst.xml | 23 + help/en_US/idct1.xml | 23 + help/en_US/idct2.xml | 23 + help/en_US/idst1.xml | 23 + help/en_US/ifft1.xml | 81 ++++ help/en_US/ifft21.xml | 68 +++ help/en_US/ifht.xml | 23 + help/en_US/ifwht.xml | 23 + help/en_US/invfreq.xml | 23 + help/en_US/invfreqs.xml | 78 ++++ help/en_US/invfreqz.xml | 76 ++++ help/en_US/kaiserord.xml | 84 ++++ help/en_US/master_help.xml | 504 +++++---------------- help/en_US/ncauer.xml | 71 +++ help/en_US/pburg.xml | 71 +++ help/en_US/pei_tseng_notch.xml | 66 +++ help/en_US/pyulear.xml | 51 +++ help/en_US/qp_kaiser.xml | 64 +++ help/en_US/rceps.xml | 23 + help/en_US/remez1.xml | 23 + help/en_US/scilab_en_US_help/JavaHelpSearch/DOCS | Bin 11007 -> 13715 bytes .../scilab_en_US_help/JavaHelpSearch/DOCS.TAB | Bin 1499 -> 1836 bytes .../en_US/scilab_en_US_help/JavaHelpSearch/OFFSETS | Bin 687 -> 873 bytes .../scilab_en_US_help/JavaHelpSearch/POSITIONS | Bin 46489 -> 56855 bytes help/en_US/scilab_en_US_help/JavaHelpSearch/SCHEMA | 2 +- help/en_US/scilab_en_US_help/JavaHelpSearch/TMAP | Bin 24576 -> 28672 bytes help/en_US/scilab_en_US_help/jhelpmap.jhm | 59 ++- help/en_US/scilab_en_US_help/jhelptoc.xml | 59 ++- help/en_US/sftrans.xml | 100 ++++ help/en_US/sigmoid_train.xml | 23 + help/en_US/sinetone.xml | 23 + help/en_US/sinewave.xml | 23 + help/en_US/spectral_adf.xml | 23 + help/en_US/spectral_xdf.xml | 23 + help/en_US/spencer.xml | 23 + help/en_US/stft.xml | 23 + help/en_US/synthesis.xml | 23 + help/en_US/tfestimate.xml | 77 ++++ help/en_US/wconv.xml | 64 +++ help/en_US/xcorr1.xml | 81 ++++ help/en_US/xcov1.xml | 23 + help/en_US/yulewalker.xml | 23 + help/en_US/zp2ss.xml | 90 ++++ help/en_US/zp2tf.xml | 72 +++ 68 files changed, 3050 insertions(+), 405 deletions(-) create mode 100644 help/en_US/arch_rnd.xml create mode 100644 help/en_US/arma_rnd.xml create mode 100644 help/en_US/besselap.xml create mode 100644 help/en_US/buttap.xml create mode 100644 help/en_US/cceps.xml create mode 100644 help/en_US/cheb.xml create mode 100644 help/en_US/cheb1ap.xml create mode 100644 help/en_US/cheb2ap.xml create mode 100644 help/en_US/cl2bp.xml create mode 100644 help/en_US/cplxreal.xml create mode 100644 help/en_US/czt.xml create mode 100644 help/en_US/dst1.xml create mode 100644 help/en_US/ellipap.xml create mode 100644 help/en_US/fft1.xml create mode 100644 help/en_US/fft21.xml create mode 100644 help/en_US/fftw1.xml create mode 100644 help/en_US/fht.xml create mode 100644 help/en_US/freqs.xml create mode 100644 help/en_US/fwht.xml create mode 100644 help/en_US/hilbert1.xml create mode 100644 help/en_US/hurst.xml create mode 100644 help/en_US/idct1.xml create mode 100644 help/en_US/idct2.xml create mode 100644 help/en_US/idst1.xml create mode 100644 help/en_US/ifft1.xml create mode 100644 help/en_US/ifft21.xml create mode 100644 help/en_US/ifht.xml create mode 100644 help/en_US/ifwht.xml create mode 100644 help/en_US/invfreq.xml create mode 100644 help/en_US/invfreqs.xml create mode 100644 help/en_US/invfreqz.xml create mode 100644 help/en_US/kaiserord.xml create mode 100644 help/en_US/ncauer.xml create mode 100644 help/en_US/pburg.xml create mode 100644 help/en_US/pei_tseng_notch.xml create mode 100644 help/en_US/pyulear.xml create mode 100644 help/en_US/qp_kaiser.xml create mode 100644 help/en_US/rceps.xml create mode 100644 help/en_US/remez1.xml create mode 100644 help/en_US/sftrans.xml create mode 100644 help/en_US/sigmoid_train.xml create mode 100644 help/en_US/sinetone.xml create mode 100644 help/en_US/sinewave.xml create mode 100644 help/en_US/spectral_adf.xml create mode 100644 help/en_US/spectral_xdf.xml create mode 100644 help/en_US/spencer.xml create mode 100644 help/en_US/stft.xml create mode 100644 help/en_US/synthesis.xml create mode 100644 help/en_US/tfestimate.xml create mode 100644 help/en_US/wconv.xml create mode 100644 help/en_US/xcorr1.xml create mode 100644 help/en_US/xcov1.xml create mode 100644 help/en_US/yulewalker.xml create mode 100644 help/en_US/zp2ss.xml create mode 100644 help/en_US/zp2tf.xml (limited to 'help/en_US') diff --git a/help/en_US/ac2rc.xml b/help/en_US/ac2rc.xml index 2e8a109..a84b240 100644 --- a/help/en_US/ac2rc.xml +++ b/help/en_US/ac2rc.xml @@ -17,7 +17,7 @@ ac2rc - + Convert autocorrelation sequence to reflection coefficients. @@ -26,6 +26,33 @@ k = ac2rc(R) [k,R0] = ac2rc(R) + + + + Parameters + + R: + The input autocorrelation sequence. If r is a matrix, each column of r is treated as a separate signal. + k: + Returns the reflection coefficients + R0: + the zero lag autocorrelation, R0, based on the autocorrelation sequence, R. + + + + + Examples + + diff --git a/help/en_US/arburg.xml b/help/en_US/arburg.xml index 75648ba..6aa017e 100644 --- a/help/en_US/arburg.xml +++ b/help/en_US/arburg.xml @@ -49,7 +49,11 @@ Description This is an Octave function. + + This function calculates coefficients of an autoregressive (AR) model of complex data x using the whitening lattice-filter method of Burg. + + The first argument is the data sampled. The second argument is the number of poles in the model (or limit in case a criterion is supplied). The third parameter takes in the criterion to limit the number of poles. The acceptable values are "AIC", "AKICc", "KIC", "AICc" which are based on information theory. Output variable a is a list of P+1 autoregression coefficients. diff --git a/help/en_US/arch_rnd.xml b/help/en_US/arch_rnd.xml new file mode 100644 index 0000000..4692e05 --- /dev/null +++ b/help/en_US/arch_rnd.xml @@ -0,0 +1,74 @@ + + + + + + + + arch_rnd + Simulate an ARCH sequence of length t with AR coefficients b and CH coefficients a. + + + + + Calling Sequence + + arch_rnd (a, b, t) + + + + + Parameters + + a: + CH coefficients + b: + AR coefficients + t: + Length of ARCH sequence + + + + + Description + +This is an Octave function. +It Simulates an ARCH sequence of length t with AR coefficients b and CH coefficients a. +The result y(t) follows the model + + +y(t) = b(1) + b(2) * y(t-1) + … + b(lb) * y(t-lb+1) + e(t), +where e(t), given y up to time t-1, is N(0, h(t)), with + + +h(t) = a(1) + a(2) * e(t-1)^2 + … + a(la) * e(t-la+1)^2 + + + + + Examples + + + diff --git a/help/en_US/arcov.xml b/help/en_US/arcov.xml index 64a5364..11f1d94 100644 --- a/help/en_US/arcov.xml +++ b/help/en_US/arcov.xml @@ -17,7 +17,29 @@ arcov - + Autoregressive all-pole model parameters — covariance method + + + Calling Sequence + + a = arcov(x,p) + [a,e] = arcov(x,p) + + + + + Parameters + + a: + contains normalized estimates of the AR system parameters, A(z), in descending powers of z. + e: + variance estimate of the white noise input to the AR model + x: + is the input signal + p: + is the order of the auto regressive model + + diff --git a/help/en_US/arma_rnd.xml b/help/en_US/arma_rnd.xml new file mode 100644 index 0000000..fdf1c26 --- /dev/null +++ b/help/en_US/arma_rnd.xml @@ -0,0 +1,82 @@ + + + + + + + + arma_rnd + Return a simulation of the ARMA model. + + + + + Calling Sequence + + arma_rnd (a, b, v, t, n) + arma_rnd (a, b, v, t) + + + + + Parameters + + a: + vector + b: + vector + v: + Variance + t: + Length of output vector + n: + Number of dummy x(i) used for initialization + + + + + Description + +This is an Octave function. +The ARMA model is defined by + + +x(n) = a(1) * x(n-1) + … + a(k) * x(n-k) ++ e(n) + b(1) * e(n-1) + … + b(l) * e(n-l) +in which k is the length of vector a, l is the length of vector b and e is Gaussian white noise with variance v. The function returns a vector of length t. + + +The optional parameter n gives the number of dummy x(i) used for initialization, i.e., a sequence of length t+n is generated and x(n+1:t+n) is returned. If n is omitted, n = 100 is used. + + + + + Examples + + + diff --git a/help/en_US/aryule.xml b/help/en_US/aryule.xml index 9948a0f..7d706fd 100644 --- a/help/en_US/aryule.xml +++ b/help/en_US/aryule.xml @@ -46,6 +46,8 @@ Description This is an Octave function. + + This function fits an AR (p)-model with Yule-Walker estimates. The first argument is the data vector which is to be estimated. Output variable a gives the AR coefficients, v gives the variance of the white noise and k gives the reflection coefficients to be used in the lattice filter. diff --git a/help/en_US/besselap.xml b/help/en_US/besselap.xml new file mode 100644 index 0000000..f3236d7 --- /dev/null +++ b/help/en_US/besselap.xml @@ -0,0 +1,71 @@ + + + + + + + + besselap + Return bessel analog filter prototype. + + + + + Calling Sequence + + [zero, pole, gain] = besselap (n) + [zero, pole] = besselap (n) + zero = besselap (n) + + + + + Parameters + + n: + Filter Order + zero: + Zeros + pole: + Poles + gain: + Gain + + + + + Description + +This is an Octave function. +It Return bessel analog filter prototype of nth order. + + + + + Examples + + + diff --git a/help/en_US/buttap.xml b/help/en_US/buttap.xml new file mode 100644 index 0000000..d891af5 --- /dev/null +++ b/help/en_US/buttap.xml @@ -0,0 +1,67 @@ + + + + + + + + buttap + Design a lowpass analog Butterworth filter. + + + + + Calling Sequence + + z = buttap (n) + [z, p] = buttap (n) + [z, p, g] = buttap (n) + + + + + Parameters + + n: + Filter Order + z: + Zeros + p: + Poles + g: + Gain + + + + + Description + +This is an Octave function. +It designs a lowpass analog Butterworth filter of nth order. + + + + + Examples + + + diff --git a/help/en_US/cceps.xml b/help/en_US/cceps.xml new file mode 100644 index 0000000..8f270f6 --- /dev/null +++ b/help/en_US/cceps.xml @@ -0,0 +1,23 @@ + + + + + + + + cceps + + + + diff --git a/help/en_US/cheb.xml b/help/en_US/cheb.xml new file mode 100644 index 0000000..7e39e30 --- /dev/null +++ b/help/en_US/cheb.xml @@ -0,0 +1,65 @@ + + + + + + + + cheb + Calculates the nth-order Chebyshev polynomial at the point x. + + + + + Calling Sequence + + cheb(n, x) + + + + + Parameters + + n: + Filter order + x: + Point at which the Chebyshev polynomial is calculater. + + + + + Description + +This is an Octave function. +Equation for Chebyshev polynomial is +/ cos(n acos(x), |x| <= 1 +Tn(x) = | +\ cosh(n acosh(x), |x| > 1 + + +x can also be a vector. In that case the output will also be a vector of same size as x. + + + + + Examples + + + diff --git a/help/en_US/cheb1ap.xml b/help/en_US/cheb1ap.xml new file mode 100644 index 0000000..dbd541a --- /dev/null +++ b/help/en_US/cheb1ap.xml @@ -0,0 +1,75 @@ + + + + + + + + cheb1ap + This function designs a lowpass analog Chebyshev type I filter. + + + + + Calling Sequence + + [z, p, g] = cheb1ap (n, Rp) + [z, p] = cheb1ap (n, Rp) + p = cheb1ap (n, Rp) + + + + + Parameters + + n: + Filter Order + Rp: + Peak-to-peak passband ripple + z: + Zeros + p: + Poles + g: + Gain + + + + + Description + +This is an Octave function. +It designs a lowpass analog Chebyshev type I filter of nth order and with a Peak-to-peak passband ripple of Rp. + + + + + Examples + + + diff --git a/help/en_US/cheb2ap.xml b/help/en_US/cheb2ap.xml new file mode 100644 index 0000000..0fcdd8f --- /dev/null +++ b/help/en_US/cheb2ap.xml @@ -0,0 +1,63 @@ + + + + + + + + cheb2ap + This function designs a lowpass analog Chebyshev type II filter. + + + + + Calling Sequence + + [z, p, g] = cheb2ap (n, Rs) + [z, p] = cheb2ap (n, Rs) + p = cheb2ap (n, Rs) + + + + + Parameters + + n: + Filter Order + Rs: + Stopband attenuation + z: + Zeros + p: + Poles + g: + Gain + + + + + Description + +This is an Octave function. +This function designs a lowpass analog Chebyshev type II filter of nth order and with a stopband attenuation of Rs. + + + + + Examples + + + diff --git a/help/en_US/cl2bp.xml b/help/en_US/cl2bp.xml new file mode 100644 index 0000000..d91c257 --- /dev/null +++ b/help/en_US/cl2bp.xml @@ -0,0 +1,75 @@ + + + + + + + + cl2bp + Constrained L2 bandpass FIR filter design. + + + + + Calling Sequence + + h = cl2bp (m, w1, w2, up, lo, gridsize) + h = cl2bp (m, w1, w2, up, lo) + + + + + Parameters + + m: + degree of cosine polynomial, i.e. the number of output coefficients will be m*2+1 + w1 and w2: + bandpass filter cutoffs in the range 0 <= w1 < w2 <= pi, where pi is the Nyquist frequency + up: + vector of 3 upper bounds for [stopband1, passband, stopband2] + lo: + vector of 3 lower bounds for [stopband1, passband, stopband2] + gridsize: + search grid size; larger values may improve accuracy, but greatly increase calculation time. + + + + + Description + +This is an Octave function. +Constrained L2 bandpass FIR filter design. Compared to remez, it offers implicit specification of transition bands, a higher likelihood of convergence, and an error criterion combining features of both L2 and Chebyshev approaches. + + + + + Examples + + + diff --git a/help/en_US/cplxreal.xml b/help/en_US/cplxreal.xml new file mode 100644 index 0000000..e33c102 --- /dev/null +++ b/help/en_US/cplxreal.xml @@ -0,0 +1,66 @@ + + + + + + + + cplxreal + Function to divide vector z into complex and real elements, removing the one of each complex conjugate pair. + + + + + Calling Sequence + + [zc, zr] = cplxreal (z, thresh) + [zc, zr] = cplxreal (z) + zc = cplxreal (z, thresh) + zc = cplxreal (z) + + + + + Parameters + + z: + vector of complex numbers. + thresh: + tolerance for comparisons. + zc: + vector containing the elements of z that have positive imaginary parts. + zr: + vector containing the elements of z that are real. + + + + + Description + +This is an Octave function. +Every complex element of z is expected to have a complex-conjugate elsewhere in z. From the pair of complex-conjugates, the one with the negative imaginary part is removed. +If the magnitude of the imaginary part of an element is less than the thresh, it is declared as real. + + + + + Examples + + + diff --git a/help/en_US/czt.xml b/help/en_US/czt.xml new file mode 100644 index 0000000..b5f70c6 --- /dev/null +++ b/help/en_US/czt.xml @@ -0,0 +1,23 @@ + + + + + + + + czt + + + + diff --git a/help/en_US/dst1.xml b/help/en_US/dst1.xml new file mode 100644 index 0000000..e41beb5 --- /dev/null +++ b/help/en_US/dst1.xml @@ -0,0 +1,23 @@ + + + + + + + + dst1 + + + + diff --git a/help/en_US/ellipap.xml b/help/en_US/ellipap.xml new file mode 100644 index 0000000..597a4c1 --- /dev/null +++ b/help/en_US/ellipap.xml @@ -0,0 +1,68 @@ + + + + + + + + ellipap + Designs a lowpass analog elliptic filter. + + + + + Calling Sequence + + [z, p, g] = ellipap (n, Rp, Rs) + [z, p] = ellipap (n, Rp, Rs) + z = ellipap (n, Rp, Rs) + + + + + Parameters + + n: + Filter Order + Rp: + Peak-to-peak passband ripple + Rs: + Stopband attenuation + + + + + Description + +This is an Octave function. +It designs a lowpass analog elliptic filter of nth order, with a Peak-to-peak passband ripple of Rp and a stopband attenuation of Rs. + + + + + Examples + + + diff --git a/help/en_US/fft1.xml b/help/en_US/fft1.xml new file mode 100644 index 0000000..2989876 --- /dev/null +++ b/help/en_US/fft1.xml @@ -0,0 +1,74 @@ + + + + + + + + fft1 + Calculates the discrete Fourier transform of a matrix using Fast Fourier Transform algorithm. + + + + + Calling Sequence + + fft (x, n, dim) + fft (x, n) + fft (x) + + + + + Parameters + + x: + input matrix + n: + Specifies the number of elements of x to be used + dim: + Specifies the dimention of the matrix along which the FFT is performed + + + + + Description + +This is an Octave function. +The FFT is calculated along the first non-singleton dimension of the array. Thus, FFT is computed for each column of x. + + +n is an integer specifying the number of elements of x to use. If n is larger than dimention along. which the FFT is calculated, then x is resized and padded with zeros. +Similarly, if n is smaller, then x is truncated. + + +dim is an integer specifying the dimension of the matrix along which the FFT is performed. + + + + + Examples + + + diff --git a/help/en_US/fft21.xml b/help/en_US/fft21.xml new file mode 100644 index 0000000..eccf719 --- /dev/null +++ b/help/en_US/fft21.xml @@ -0,0 +1,68 @@ + + + + + + + + fft21 + Calculates the two-dimensional discrete Fourier transform of A using a Fast Fourier Transform algorithm. + + + + + Calling Sequence + + fft2 (A, m, n) + fft2 (A) + + + + + Parameters + + A: + input matrix + m: + number of rows of A to be used + n: + number of columns of A to be used + + + + + Description + +This is an Octave function. +It performs two-dimentional FFT on the matrix A. m and n may be used specify the number of rows and columns of A to use. If either of these is larger than the size of A, A is resized and padded with zeros. +If A is a multi-dimensional matrix, each two-dimensional sub-matrix of A is treated separately. + + + + + Examples + + + diff --git a/help/en_US/fftw1.xml b/help/en_US/fftw1.xml new file mode 100644 index 0000000..482f5df --- /dev/null +++ b/help/en_US/fftw1.xml @@ -0,0 +1,94 @@ + + + + + + + + fftw1 + Manage FFTW wisdom data. + + + + + Calling Sequence + + method = fftw ("planner") + fftw ("planner", method) + wisdom = fftw ("dwisdom") + fftw ("dwisdom", wisdom) + fftw ("threads", nthreads) + nthreads = fftw ("threads") + + + + + Parameters + + + + + + Description + +This is an Octave function. +Wisdom data can be used to significantly accelerate the calculation of the FFTs, but implies an initial cost in its calculation. When the FFTW libraries are initialized, they read a system wide wisdom +file (typically in /etc/fftw/wisdom), allowing wisdom to be shared between applications other than Octave. Alternatively, the fftw function can be used to import wisdom. For example, + + +wisdom = fftw ("dwisdom") +will save the existing wisdom used by Octave to the string wisdom. This string can then be saved to a file and restored using the save and load commands respectively. This existing wisdom can be re +imported as follows + + +fftw ("dwisdom", wisdom) +If wisdom is an empty string, then the wisdom used is cleared. + + +During the calculation of Fourier transforms further wisdom is generated. The fashion in which this wisdom is generated is also controlled by the fftw function. There are five different manners in which +the wisdom can be treated: + + +"estimate" +Specifies that no run-time measurement of the optimal means of calculating a particular is performed, and a simple heuristic is used to pick a (probably sub-optimal) plan. The advantage of this method +is that there is little or no overhead in the generation of the plan, which is appropriate for a Fourier transform that will be calculated once. + + +"measure" +In this case a range of algorithms to perform the transform is considered and the best is selected based on their execution time. + + +"patient" +Similar to "measure", but a wider range of algorithms is considered. + + +"exhaustive" +Like "measure", but all possible algorithms that may be used to treat the transform are considered. + + +"hybrid" +As run-time measurement of the algorithm can be expensive, this is a compromise where "measure" is used for transforms up to the size of 8192 and beyond that the "estimate" method is used. + + +The default method is "estimate". The current method can be queried with + + +method = fftw ("planner") +or set by using + + +fftw ("planner", method) + + + diff --git a/help/en_US/fht.xml b/help/en_US/fht.xml new file mode 100644 index 0000000..06311a3 --- /dev/null +++ b/help/en_US/fht.xml @@ -0,0 +1,23 @@ + + + + + + + + fht + funcprot(0); + + + diff --git a/help/en_US/freqs.xml b/help/en_US/freqs.xml new file mode 100644 index 0000000..258f280 --- /dev/null +++ b/help/en_US/freqs.xml @@ -0,0 +1,61 @@ + + + + + + + + freqs + Compute the s-plane frequency response of the IIR filter. + + + + + Calling Sequence + + h = freqs (b, a, w) + + + + + Parameters + + b: + vector containing the coefficients of the numerator of the filter. + a: + vector containing the coefficients of the denominator of the filter. + w: + vector containing frequencies + + + + + Description + +This is an Octave function. +It computes the s-plane frequency response of the IIR filter B(s)/A(s) as H = polyval(B,j*W)./polyval(A,j*W). +If called with no output argument, a plot of magnitude and phase are displayed. + + + + + Examples + + + diff --git a/help/en_US/fwht.xml b/help/en_US/fwht.xml new file mode 100644 index 0000000..7b62250 --- /dev/null +++ b/help/en_US/fwht.xml @@ -0,0 +1,23 @@ + + + + + + + + fwht + + + + diff --git a/help/en_US/hilbert1.xml b/help/en_US/hilbert1.xml new file mode 100644 index 0000000..5bfa3d2 --- /dev/null +++ b/help/en_US/hilbert1.xml @@ -0,0 +1,23 @@ + + + + + + + + hilbert1 + + + + diff --git a/help/en_US/hurst.xml b/help/en_US/hurst.xml new file mode 100644 index 0000000..85f3cc9 --- /dev/null +++ b/help/en_US/hurst.xml @@ -0,0 +1,23 @@ + + + + + + + + hurst + + + + diff --git a/help/en_US/idct1.xml b/help/en_US/idct1.xml new file mode 100644 index 0000000..c43eb1c --- /dev/null +++ b/help/en_US/idct1.xml @@ -0,0 +1,23 @@ + + + + + + + + idct1 + funcprot(0); + + + diff --git a/help/en_US/idct2.xml b/help/en_US/idct2.xml new file mode 100644 index 0000000..0e7fcdc --- /dev/null +++ b/help/en_US/idct2.xml @@ -0,0 +1,23 @@ + + + + + + + + idct2 + funcprot(0); + + + diff --git a/help/en_US/idst1.xml b/help/en_US/idst1.xml new file mode 100644 index 0000000..74a9f0e --- /dev/null +++ b/help/en_US/idst1.xml @@ -0,0 +1,23 @@ + + + + + + + + idst1 + funcprot(0); + + + diff --git a/help/en_US/ifft1.xml b/help/en_US/ifft1.xml new file mode 100644 index 0000000..9d92e8e --- /dev/null +++ b/help/en_US/ifft1.xml @@ -0,0 +1,81 @@ + + + + + + + + ifft1 + Calculates the inverse discrete Fourier transform of a matrix using Fast Fourier Transform algorithm. + + + + + Calling Sequence + + ifft (x, n, dim) + ifft (x, n) + ifft (x) + + + + + Parameters + + x: + input matrix + n: + Specifies the number of elements of x to be used + dim: + Specifies the dimention of the matrix along which the inverse FFT is performed + + + + + Description + +This is an Octave function. + + + + + Description + +This is an Octave function. +The inverse FFT is calculated along the first non-singleton dimension of the array. Thus, inverse FFT is computed for each column of x. + + +n is an integer specifying the number of elements of x to use. If n is larger than dimention along. which the inverse FFT is calculated, then x is resized and padded with zeros. +Similarly, if n is smaller, then x is truncated. + + +dim is an integer specifying the dimension of the matrix along which the inverse FFT is performed. + + + + + Examples + + + diff --git a/help/en_US/ifft21.xml b/help/en_US/ifft21.xml new file mode 100644 index 0000000..fed0499 --- /dev/null +++ b/help/en_US/ifft21.xml @@ -0,0 +1,68 @@ + + + + + + + + ifft21 + Calculates the inverse two-dimensional discrete Fourier transform of A using a Fast Fourier Transform algorithm. + + + + + Calling Sequence + + ifft2 (A, m, n) + ifft2 (A) + + + + + Parameters + + A: + input matrix + m: + number of rows of A to be used + n: + number of columns of A to be used + + + + + Description + +This is an Octave function. +It performs inverse two-dimensional FFT on the matrix A. m and n may be used specify the number of rows and columns of A to use. If either of these is larger than the size of A, A is resized and padded with zeros. +If A is a multi-dimensional matrix, each two-dimensional sub-matrix of A is treated separately. + + + + + Examples + + + diff --git a/help/en_US/ifht.xml b/help/en_US/ifht.xml new file mode 100644 index 0000000..2d9ead3 --- /dev/null +++ b/help/en_US/ifht.xml @@ -0,0 +1,23 @@ + + + + + + + + ifht + funcprot(0); + + + diff --git a/help/en_US/ifwht.xml b/help/en_US/ifwht.xml new file mode 100644 index 0000000..37903a0 --- /dev/null +++ b/help/en_US/ifwht.xml @@ -0,0 +1,23 @@ + + + + + + + + ifwht + + + + diff --git a/help/en_US/invfreq.xml b/help/en_US/invfreq.xml new file mode 100644 index 0000000..2f10f8e --- /dev/null +++ b/help/en_US/invfreq.xml @@ -0,0 +1,23 @@ + + + + + + + + invfreq + + + + diff --git a/help/en_US/invfreqs.xml b/help/en_US/invfreqs.xml new file mode 100644 index 0000000..a35a2d6 --- /dev/null +++ b/help/en_US/invfreqs.xml @@ -0,0 +1,78 @@ + + + + + + + + invfreqs + Fit filter B(s)/A(s)to the complex frequency response H at frequency points F. A and B are real polynomial coefficients of order nA and nB. + + + + + Calling Sequence + + [B,A,C] = invfreqs(H,F,nB,nA,W,iter,tol,trace) + [B,A,C] = invfreqs(H,F,nB,nA,W) + [B,A,C] = invfreqs(H,F,nB,nA) + + + + + Parameters + + H: + desired complex frequency response. + F: + frequency (must be same length as H). + nB: + order of the numerator polynomial B. + nA: + order of the denominator polynomial A. + W: + vector of weights (must be same length as F). + + + + + Description + +This is an Octave function. +Fit filter B(s)/A(s)to the complex frequency response H at frequency points F. A and B are real polynomial coefficients of order nA and nB. +Optionally, the fit-errors can be weighted vs frequency according to the weights W. +Note: all the guts are in invfreq.m + + + + + Examples + + + diff --git a/help/en_US/invfreqz.xml b/help/en_US/invfreqz.xml new file mode 100644 index 0000000..188595a --- /dev/null +++ b/help/en_US/invfreqz.xml @@ -0,0 +1,76 @@ + + + + + + + + invfreqz + Fit filter B(z)/A(z)to the complex frequency response H at frequency points F. A and B are real polynomial coefficients of order nA and nB. + + + + + Calling Sequence + + [B,A,C] = invfreqz(H,F,nB,nA,W,iter,tol,trace) + [B,A,C] = invfreqz(H,F,nB,nA,W) + [B,A,C] = invfreqz(H,F,nB,nA) + + + + + Parameters + + H: + desired complex frequency response. + F: + frequency (must be same length as H). + nB: + order of the numerator polynomial B. + nA: + order of the denominator polynomial A. + W: + vector of weights (must be same length as F). + + + + + Description + +This is an Octave function. +Fit filter B(z)/A(z)to the complex frequency response H at frequency points F. A and B are real polynomial coefficients of order nA and nB. +Optionally, the fit-errors can be weighted vs frequency according to the weights W. +Note: all the guts are in invfreq.m + + + + + Examples + + + diff --git a/help/en_US/kaiserord.xml b/help/en_US/kaiserord.xml new file mode 100644 index 0000000..8a76cf7 --- /dev/null +++ b/help/en_US/kaiserord.xml @@ -0,0 +1,84 @@ + + + + + + + + kaiserord + Return the parameters needed to produce a filter of the desired specification from a Kaiser window. + + + + + Calling Sequence + + [n, Wn, beta, ftype] = kaiserord (f, m, dev, fs) + […] = kaiserord (f, m, dev, fs) + […] = kaiserord (f, m, dev) + + + + + Parameters + + f: + Pairs of frequency band edges. + m: + Magnitude response for each band. + dev: + Deviation of the filter. + fs: + Sampling rate. + + + + + Description + +This is an Octave function. +The vector f contains pairs of frequency band edges in the range [0,1]. The vector m specifies the magnitude response for each band. The values of m must be zero for all stop bands and must have the +same magnitude for all pass bands. The deviation of the filter dev can be specified as a scalar or a vector of the same length as m. The optional sampling rate fs can be used to indicate that f is in +Hz in the range [0,fs/2]. + + +The returned value n is the required order of the filter (the length of the filter minus 1). The vector Wn contains the band edges of the filter suitable for passing to fir1. The value beta is the +parameter of the Kaiser window of length n+1 to shape the filter. The string ftype contains the type of filter to specify to fir1. + + +The Kaiser window parameters n and beta are computed from the relation between ripple (A=-20*log10(dev)) and transition width (dw in radians) discovered empirically by Kaiser: + + + + +/ 0.1102(A-8.7) A > 50 +beta = | 0.5842(A-21)^0.4 + 0.07886(A-21) 21 <= A <= 50 +\ 0.0 A < 21 + + +n = (A-8)/(2.285 dw) + + + + + Examples + + + diff --git a/help/en_US/master_help.xml b/help/en_US/master_help.xml index ab18d66..3fff4c5 100644 --- a/help/en_US/master_help.xml +++ b/help/en_US/master_help.xml @@ -1,16 +1,18 @@ -<<<<<<< HEAD + + + @@ -19,23 +21,31 @@ + + + + + + + + @@ -43,13 +53,19 @@ + + + + + + @@ -58,8 +74,10 @@ + + @@ -69,13 +87,25 @@ + + + + + + + + + + + + @@ -85,6 +115,7 @@ + @@ -104,13 +135,16 @@ + + + @@ -131,13 +165,17 @@ + + + + @@ -152,10 +190,14 @@ + + + + @@ -164,14 +206,20 @@ + + + + + + @@ -187,209 +235,20 @@ + + + + + + -======= - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ->>>>>>> 9f6962b19c4a5fa76f7525a72faabb1b754712ad ]> FOSSEE Signal Processing Toolbox -<<<<<<< HEAD FOSSEE Signal Processing Toolbox &a81320b4221ec0c937db241f3f09761d9; 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[default=256] + Fs: + [real scalar] sampling frequency (Hertz) [default=1] + range: + 'half', 'onesided' : frequency range of the spectrum is from zero up to but not including sample_f/2. Power from negative frequencies is added to the positive side of the spectrum. 'whole', 'twosided' : frequency range of the spectrum is -sample_f/2 to sample_f/2, with negative frequencies stored in "wrap around" order after the positive frequencies; e.g. frequencies for a 10-point 'twosided' spectrum are 0 0.1 0.2 0.3 0.4 0.5 -0.4 -0.3 -0.2 -0.1 'shift', 'centerdc' : same as 'whole' but with the first half of the spectrum swapped with second half to put the zero-frequency value in the middle. (See "help fftshift". If "freq" is vector, 'shift' is ignored. If model coefficients "ar_coeffs" are real, the default range is 'half', otherwise default range is 'whole'. + method: + 'fft': use FFT to calculate power spectral density. 'poly': calculate spectral density as a polynomial of 1/z N.B. this argument is ignored if the "freq" argument is a vector. The default is 'poly' unless the "freq" argument is an integer power of 2. + plot_type: + 'plot', 'semilogx', 'semilogy', 'loglog', 'squared' or 'db' specifies the type of plot. The default is 'plot', which means linear-linear axes. 'squared' is the same as 'plot'. 'dB' plots "10*log10(psd)". This argument is ignored and a spectrum is not plotted if the caller requires a returned value. + criterion: + [optional string arg] model-selection criterion. Limits the number of poles so that spurious poles are not added when the whitened data has no more information in it (see Kay & Marple, 1981). Recognized values are 'AKICc' -- approximate corrected Kullback information criterion (recommended), 'KIC' -- Kullback information criterion 'AICc' -- corrected Akaike information criterion 'AIC' -- Akaike information criterion 'FPE' -- final prediction error" criterion The default is to NOT use a model-selection criterion. + + + + + Description + +This function is being called from Octave +This function is a wrapper for arburg and ar_psd. +The functions "arburg" and "ar_psd" do all the work. +See "help arburg" and "help ar_psd" for further details. + + + + + Examples + + + diff --git a/help/en_US/pei_tseng_notch.xml b/help/en_US/pei_tseng_notch.xml new file mode 100644 index 0000000..a2b1f37 --- /dev/null +++ b/help/en_US/pei_tseng_notch.xml @@ -0,0 +1,66 @@ + + + + + + + + pei_tseng_notch + + + + + + Calling Sequence + + [b, a] = pei_tseng_notch (frequencies, bandwidths) + b = pei_tseng_notch (frequencies, bandwidths) + + + + + Parameters + + frequencies: + filter frequencies + bandwidths: + bandwidths to be used with filter + + + + + Description + +This is an Octave function. +It return coefficients for an IIR notch-filter with one or more filter frequencies and according bandwidths. The filter is based on a all pass filter that performs phasereversal at filter frequencies. +This leads to removal of those frequencies of the original and phase-distorted signal. + + + + + Examples + + + diff --git a/help/en_US/pyulear.xml b/help/en_US/pyulear.xml new file mode 100644 index 0000000..87171cd --- /dev/null +++ b/help/en_US/pyulear.xml @@ -0,0 +1,51 @@ + + + + + + + + pyulear + + + + + + Calling Sequence + + [psd,f_out] = pyulear(x,poles,freq,Fs,range,method,plot_type) + All but the first two arguments are optional and may be empty. + + + + + Parameters + + x: + [vector] sampled data + poles: + [integer scalar] required number of poles of the AR model + freq: + [real vector] frequencies at which power spectral density is calculated [integer scalar] number of uniformly distributed frequency values at which spectral density is calculated. [default=256] + Fs: + [real scalar] sampling frequency (Hertz) [default=1] + range: + 'half', 'onesided' : frequency range of the spectrum is from zero up to but not including sample_f/2. Power from negative frequencies is added to the positive side of the spectrum. 'whole', 'twosided' : frequency range of the spectrum is -sample_f/2 to sample_f/2, with negative frequencies stored in "wrap around" order after the positive frequencies; e.g. frequencies for a 10-point 'twosided' spectrum are 0 0.1 0.2 0.3 0.4 0.5 -0.4 -0.3 -0.2 -0.1 'shift', 'centerdc' : same as 'whole' but with the first half of the spectrum swapped with second half to put the zero-frequency value in the middle. (See "help fftshift". If "freq" is vector, 'shift' is ignored. If model coefficients "ar_coeffs" are real, the default range is 'half', otherwise default range is 'whole'. + method: + 'fft': use FFT to calculate power spectral density. 'poly': calculate spectral density as a polynomial of 1/z N.B. this argument is ignored if the "freq" argument is a vector. The default is 'poly' unless the "freq" argument is an integer power of 2. + plot_type: + 'plot', 'semilogx', 'semilogy', 'loglog', 'squared' or 'db' specifies the type of plot. The default is 'plot', which means linear-linear axes. 'squared' is the same as 'plot'. 'dB' plots "10*log10(psd)". This argument is ignored and a spectrum is not plotted if the caller requires a returned value. + + + diff --git a/help/en_US/qp_kaiser.xml b/help/en_US/qp_kaiser.xml new file mode 100644 index 0000000..005f11a --- /dev/null +++ b/help/en_US/qp_kaiser.xml @@ -0,0 +1,64 @@ + + + + + + + + qp_kaiser + Computes a finite impulse response (FIR) filter for use with a quasi-perfect reconstruction polyphase-network filter bank. + + + + + Calling Sequence + + qp_kaiser (nb, at, linear) + qp_kaiser (nb, at) + + + + + Parameters + + nb: + Number of bands + at: + Attenuation + linear: + When not zero, minimum-phase calculation is omitted. + + + + + Description + +This is an Octave function. +This version utilizes a Kaiser window to shape the frequency response of the designed filter. Tha number nb of bands and the desired attenuation at in the stop-band are given as parameters. + + +The Kaiser window is multiplied by the ideal impulse response h(n)=a.sinc(a.n) and converted to its minimum-phase version by means of a Hilbert transform. + + + + + Examples + + + diff --git a/help/en_US/rceps.xml b/help/en_US/rceps.xml new file mode 100644 index 0000000..2a11479 --- /dev/null +++ b/help/en_US/rceps.xml @@ -0,0 +1,23 @@ + + + + + + + + rceps + + + + diff --git a/help/en_US/remez1.xml b/help/en_US/remez1.xml new file mode 100644 index 0000000..9656f5f --- /dev/null +++ b/help/en_US/remez1.xml @@ -0,0 +1,23 @@ + + + + + + + + remez1 + + + + diff --git a/help/en_US/scilab_en_US_help/JavaHelpSearch/DOCS b/help/en_US/scilab_en_US_help/JavaHelpSearch/DOCS index 5485e84..fa8536e 100644 Binary files a/help/en_US/scilab_en_US_help/JavaHelpSearch/DOCS and b/help/en_US/scilab_en_US_help/JavaHelpSearch/DOCS differ diff --git a/help/en_US/scilab_en_US_help/JavaHelpSearch/DOCS.TAB b/help/en_US/scilab_en_US_help/JavaHelpSearch/DOCS.TAB index 90f6c0f..28b7820 100644 Binary files a/help/en_US/scilab_en_US_help/JavaHelpSearch/DOCS.TAB and b/help/en_US/scilab_en_US_help/JavaHelpSearch/DOCS.TAB differ diff --git a/help/en_US/scilab_en_US_help/JavaHelpSearch/OFFSETS b/help/en_US/scilab_en_US_help/JavaHelpSearch/OFFSETS index 1cfd696..6cdcd55 100644 Binary files a/help/en_US/scilab_en_US_help/JavaHelpSearch/OFFSETS and b/help/en_US/scilab_en_US_help/JavaHelpSearch/OFFSETS differ diff --git a/help/en_US/scilab_en_US_help/JavaHelpSearch/POSITIONS b/help/en_US/scilab_en_US_help/JavaHelpSearch/POSITIONS index 77ece74..5da6a95 100644 Binary files a/help/en_US/scilab_en_US_help/JavaHelpSearch/POSITIONS and b/help/en_US/scilab_en_US_help/JavaHelpSearch/POSITIONS differ diff --git a/help/en_US/scilab_en_US_help/JavaHelpSearch/SCHEMA b/help/en_US/scilab_en_US_help/JavaHelpSearch/SCHEMA index cdbc5eb..815b507 100644 --- a/help/en_US/scilab_en_US_help/JavaHelpSearch/SCHEMA +++ b/help/en_US/scilab_en_US_help/JavaHelpSearch/SCHEMA @@ -1,2 +1,2 @@ JavaSearch 1.0 -TMAP bs=2048 rt=1 fl=-1 id1=1968 id2=1 +TMAP bs=2048 rt=1 fl=-1 id1=2491 id2=1 diff --git a/help/en_US/scilab_en_US_help/JavaHelpSearch/TMAP b/help/en_US/scilab_en_US_help/JavaHelpSearch/TMAP index 775f37b..58d9d44 100644 Binary files a/help/en_US/scilab_en_US_help/JavaHelpSearch/TMAP and b/help/en_US/scilab_en_US_help/JavaHelpSearch/TMAP differ diff --git a/help/en_US/scilab_en_US_help/jhelpmap.jhm b/help/en_US/scilab_en_US_help/jhelpmap.jhm index dc549a4..9f5590a 100644 --- a/help/en_US/scilab_en_US_help/jhelpmap.jhm +++ b/help/en_US/scilab_en_US_help/jhelpmap.jhm @@ -2,20 +2,19 @@ -<<<<<<< HEAD -======= - ->>>>>>> 9f6962b19c4a5fa76f7525a72faabb1b754712ad + + + @@ -24,23 +23,31 @@ + + + + + + + + @@ -48,13 +55,19 @@ + + + + + + @@ -63,8 +76,10 @@ + + @@ -74,13 +89,25 @@ + + + + + + + + + + + + @@ -90,6 +117,7 @@ + @@ -109,13 +137,16 @@ + + + @@ -136,13 +167,17 @@ + + + + @@ -157,10 +192,14 @@ + + + + @@ -169,14 +208,20 @@ + + + + + + @@ -192,12 +237,18 @@ + + + + + + \ No newline at end of file diff --git a/help/en_US/scilab_en_US_help/jhelptoc.xml b/help/en_US/scilab_en_US_help/jhelptoc.xml index f1e0621..b84b3cd 100644 --- a/help/en_US/scilab_en_US_help/jhelptoc.xml +++ b/help/en_US/scilab_en_US_help/jhelptoc.xml @@ -2,20 +2,19 @@ -<<<<<<< HEAD -======= - ->>>>>>> 9f6962b19c4a5fa76f7525a72faabb1b754712ad + + + @@ -24,23 +23,31 @@ + + + + + + + + @@ -48,13 +55,19 @@ + + + + + + @@ -63,8 +76,10 @@ + + @@ -74,13 +89,25 @@ + + + + + + + + + + + + @@ -90,6 +117,7 @@ + @@ -109,13 +137,16 @@ + + + @@ -136,13 +167,17 @@ + + + + @@ -157,10 +192,14 @@ + + + + @@ -169,14 +208,20 @@ + + + + + + @@ -192,13 +237,19 @@ + + + + + + diff --git a/help/en_US/sftrans.xml b/help/en_US/sftrans.xml new file mode 100644 index 0000000..56aee48 --- /dev/null +++ b/help/en_US/sftrans.xml @@ -0,0 +1,100 @@ + + + + + + + + sftrans + Transform band edges of a generic lowpass filter (cutoff at W=1) represented in splane zero-pole-gain form. + + + + + Calling Sequence + + [Sz, Sp, Sg] = sftrans (Sz, Sp, Sg, W, stop) + [Sz, Sp] = sftrans (Sz, Sp, Sg, W, stop) + [Sz] = sftrans (Sz, Sp, Sg, W, stop) + + + + + Parameters + + Sz: + Zeros. + Sp: + Poles. + Sg: + Gain. + W: + Edge of target filter. + stop: + True for high pass and band stop filters or false for low pass and band pass filters. + + + + + Description + +This is an Octave function. +Theory: Given a low pass filter represented by poles and zeros in the splane, you can convert it to a low pass, high pass, band pass or band stop by transforming each of the poles and zeros +individually. The following table summarizes the transformation: + + +Transform Zero at x Pole at x +---------------- ------------------------- ------------------------ +Low Pass zero: Fc x/C pole: Fc x/C +S -> C S/Fc gain: C/Fc gain: Fc/C +---------------- ------------------------- ------------------------ +High Pass zero: Fc C/x pole: Fc C/x +S -> C Fc/S pole: 0 zero: 0 +gain: -x gain: -1/x +---------------- ------------------------- ------------------------ +Band Pass zero: b +- sqrt(b^2-FhFl) pole: b +- sqrt(b^2-FhFl) +S^2+FhFl pole: 0 zero: 0 +S -> C -------- gain: C/(Fh-Fl) gain: (Fh-Fl)/C +S(Fh-Fl) b=x/C (Fh-Fl)/2 b=x/C (Fh-Fl)/2 +---------------- ------------------------- ------------------------ +Band Stop zero: b +- sqrt(b^2-FhFl) pole: b +- sqrt(b^2-FhFl) +S(Fh-Fl) pole: +-sqrt(-FhFl) zero: +-sqrt(-FhFl) +S -> C -------- gain: -x gain: -1/x +S^2+FhFl b=C/x (Fh-Fl)/2 b=C/x (Fh-Fl)/2 +---------------- ------------------------- ------------------------ +Bilinear zero: (2+xT)/(2-xT) pole: (2+xT)/(2-xT) +2 z-1 pole: -1 zero: -1 +S -> - --- gain: (2-xT)/T gain: (2-xT)/T +T z+1 +---------------- ------------------------- ------------------------ + + +where C is the cutoff frequency of the initial lowpass filter, Fc is the edge of the target low/high pass filter and [Fl,Fh] are the edges of the target band pass/stop filter. With abundant tedious +algebra, you can derive the above formulae yourself by substituting the transform for S into H(S)=S-x for a zero at x or H(S)=1/(S-x) for a pole at x, and converting the result into the form: + + +H(S)=g prod(S-Xi)/prod(S-Xj) + + + + + Examples + + + diff --git a/help/en_US/sigmoid_train.xml b/help/en_US/sigmoid_train.xml new file mode 100644 index 0000000..07a86b7 --- /dev/null +++ b/help/en_US/sigmoid_train.xml @@ -0,0 +1,23 @@ + + + + + + + + sigmoid_train + funcprot(0); + + + diff --git a/help/en_US/sinetone.xml b/help/en_US/sinetone.xml new file mode 100644 index 0000000..c47964a --- /dev/null +++ b/help/en_US/sinetone.xml @@ -0,0 +1,23 @@ + + + + + + + + sinetone + + + + diff --git a/help/en_US/sinewave.xml b/help/en_US/sinewave.xml new file mode 100644 index 0000000..2c7b0fd --- /dev/null +++ b/help/en_US/sinewave.xml @@ -0,0 +1,23 @@ + + + + + + + + sinewave + + + + diff --git a/help/en_US/spectral_adf.xml b/help/en_US/spectral_adf.xml new file mode 100644 index 0000000..56e229a --- /dev/null +++ b/help/en_US/spectral_adf.xml @@ -0,0 +1,23 @@ + + + + + + + + spectral_adf + + + + diff --git a/help/en_US/spectral_xdf.xml b/help/en_US/spectral_xdf.xml new file mode 100644 index 0000000..dfb5da5 --- /dev/null +++ b/help/en_US/spectral_xdf.xml @@ -0,0 +1,23 @@ + + + + + + + + spectral_xdf + + + + diff --git a/help/en_US/spencer.xml b/help/en_US/spencer.xml new file mode 100644 index 0000000..1d1a1ff --- /dev/null +++ b/help/en_US/spencer.xml @@ -0,0 +1,23 @@ + + + + + + + + spencer + + + + diff --git a/help/en_US/stft.xml b/help/en_US/stft.xml new file mode 100644 index 0000000..5811a67 --- /dev/null +++ b/help/en_US/stft.xml @@ -0,0 +1,23 @@ + + + + + + + + stft + + + + diff --git a/help/en_US/synthesis.xml b/help/en_US/synthesis.xml new file mode 100644 index 0000000..03de9ff --- /dev/null +++ b/help/en_US/synthesis.xml @@ -0,0 +1,23 @@ + + + + + + + + synthesis + + + + diff --git a/help/en_US/tfestimate.xml b/help/en_US/tfestimate.xml new file mode 100644 index 0000000..06ed2dd --- /dev/null +++ b/help/en_US/tfestimate.xml @@ -0,0 +1,77 @@ + + + + + + + + tfestimate + + + + + + Calling Sequence + + tfestimate (x, y, window, overlap, Nfft, Fs, range) + [Pxx, freq] = tfestimate (…) + + + + + Parameters + + x: + Input. + y: + Output. + window: + [real vector] of window-function values between 0 and 1; the data segment has the same length as the window. Default window shape is Hamming. [integer scalar] length of each data segment. The default value is window=sqrt(length(x)) rounded up to the nearest integer power of 2; see 'sloppy' argument. + overlap: + [real scalar] segment overlap expressed as a multiple of window or segment length. 0 <= overlap < 1, The default is overlap=0.5 . + Nfft: + [integer scalar] Length of FFT. The default is the length of the "window" vector or has the same value as the scalar "window" argument. If Nfft is larger than the segment length, "seg_len", the data segment is padded with "Nfft-seg_len" zeros. The default is no padding. Nfft values smaller than the length of the data segment (or window) are ignored silently. + Fs: + [real scalar] sampling frequency (Hertz); default=1.0 + range: + 'half', 'onesided' : frequency range of the spectrum is zero up to but not including Fs/2. Power from negative frequencies is added to the positive side of the spectrum, but not at zero or Nyquist (Fs/2) frequencies. This keeps power equal in time and spectral domains. See reference [2]. 'whole', 'twosided' : frequency range of the spectrum is -Fs/2 to Fs/2, with negative frequencies stored in "wrap around" order after the positive frequencies; e.g. frequencies for a 10-point 'twosided' spectrum are 0 0.1 0.2 0.3 0.4 0.5 -0.4 -0.3 -0.2 -0.1 'shift', 'centerdc' : same as 'whole' but with the first half of the spectrum swapped with second half to put the zero-frequency value in the middle. (See "help fftshift". If data (x and y) are real, the default range is 'half', otherwise default range is 'whole'. + + + + + Description + +This function is being called from Octave. +Estimate transfer function of system with input x and output y. Use the Welch (1967) periodogram/FFT method. + + + + + Examples + + + diff --git a/help/en_US/wconv.xml b/help/en_US/wconv.xml new file mode 100644 index 0000000..acbf777 --- /dev/null +++ b/help/en_US/wconv.xml @@ -0,0 +1,64 @@ + + + + + + + + wconv + Performs 1D or 2D convolution. + + + + + Calling Sequence + + y = wconv (type, x, f) + y = wconv (type, x, f, shape) + + + + + Parameters + + type: + convolution type. + x: + Signal vector or matrix. + f: + FIR filter coefficients. + shape: + Shape. + + + + + Description + +This is an Octave function. +It performs 1D or 2D convolution between the signal x and the filter coefficients f. + + + + + Examples + + + diff --git a/help/en_US/xcorr1.xml b/help/en_US/xcorr1.xml new file mode 100644 index 0000000..b89de1a --- /dev/null +++ b/help/en_US/xcorr1.xml @@ -0,0 +1,81 @@ + + + + + + + + xcorr1 + Estimates the cross-correlation. + + + + + Calling Sequence + + [R, lag] = xcorr1 (X, Y, maxlag, scale) + [R, lag] = xcorr1 (X, Y, maxlag) + [R, lag] = xcorr1 (X, Y) + + + + + Parameters + + X: + [non-empty; real or complex; vector or matrix] data. + Y: + [real or complex vector] data. + maxlag: + [integer scalar] maximum correlation lag If omitted, the default value is N-1, where N is the greater of the lengths of X and Y or, if X is a matrix, the number of rows in X. + scale: + [character string] specifies the type of scaling applied to the correlation vector (or matrix). is one of: + + + + + Description + +This is an Octave function. +Estimate the cross correlation R_xy(k) of vector arguments X and Y or, if Y is omitted, estimate autocorrelation R_xx(k) of vector X, for a range of lags k specified by argument "maxlag". If X is a +matrix, each column of X is correlated with itself and every other column. + + +The cross-correlation estimate between vectors "x" and "y" (of length N) for lag "k" is given by + + +N +R_xy(k) = sum x_{i+k} conj(y_i), +i=1 + + +where data not provided (for example x(-1), y(N+1)) is zero. Note the definition of cross-correlation given above. To compute a cross-correlation consistent with the field of statistics, see xcov. + + + + + Examples + + + diff --git a/help/en_US/xcov1.xml b/help/en_US/xcov1.xml new file mode 100644 index 0000000..7a866bb --- /dev/null +++ b/help/en_US/xcov1.xml @@ -0,0 +1,23 @@ + + + + + + + + xcov1 + + + + diff --git a/help/en_US/yulewalker.xml b/help/en_US/yulewalker.xml new file mode 100644 index 0000000..c336879 --- /dev/null +++ b/help/en_US/yulewalker.xml @@ -0,0 +1,23 @@ + + + + + + + + yulewalker + + + + diff --git a/help/en_US/zp2ss.xml b/help/en_US/zp2ss.xml new file mode 100644 index 0000000..64b0594 --- /dev/null +++ b/help/en_US/zp2ss.xml @@ -0,0 +1,90 @@ + + + + + + + + zp2ss + Converts zeros / poles to state space. + + + + + Calling Sequence + + [a, b, c, d] = zp2ss (z, p, k) + [a, b, c] = zp2ss (z, p, k) + [a, b] = zp2ss (z, p, k) + a = zp2ss (z, p, k) + + + + + Parameters + + z: + Zeros + p: + Poles + k: + Leading coefficient + a: + State space parameter + a: + State space parameter + b: + State space parameter + c: + State space parameter + d: + State space parameter + + + + + Description + +This is an Octave function. +It converts zeros / poles to state space. + + + + + Examples + + + diff --git a/help/en_US/zp2tf.xml b/help/en_US/zp2tf.xml new file mode 100644 index 0000000..c9e16af --- /dev/null +++ b/help/en_US/zp2tf.xml @@ -0,0 +1,72 @@ + + + + + + + + zp2tf + Converts zeros / poles to a transfer function. + + + + + Calling Sequence + + [num, den] = zp2tf (z, p, k) + num = zp2tf (z, p, k) + + + + + Parameters + + z: + Zeros + p: + Poles + k: + Leading coefficient + Num: + Numerator of the transfer function + den: + Denomenator of the transfer function + + + + + Description + +This is an Octave function. +It converts zeros / poles to a transfer function. + + + + + Examples + + + -- cgit