diff options
Diffstat (limited to 'macros/ifft1.sci')
-rw-r--r-- | macros/ifft1.sci | 47 |
1 files changed, 24 insertions, 23 deletions
diff --git a/macros/ifft1.sci b/macros/ifft1.sci index 7c66b19..0467721 100644 --- a/macros/ifft1.sci +++ b/macros/ifft1.sci @@ -1,27 +1,28 @@ -/* Description
- Calculates the inverse discrete Fourier transform of a matrix using Fast Fourier Transform algorithm.
- 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.
-Calling Sequence
- ifft1 (x)
- ifft1 (x, n)
- ifft1 (x, n, dim)
-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
-Examples
- x = [1 2 3; 4 5 6; 7 8 9]
- n = 3
- dim = 2
- ifft1 (x, n, dim)
- ans =
- 2.00000 + 0.00000i -0.50000 - 0.28868i -0.50000 + 0.28868i
- 5.00000 + 0.00000i -0.50000 - 0.28868i -0.50000 + 0.28868i
- 8.00000 + 0.00000i -0.50000 - 0.28868i -0.50000 + 0.28868i */
function res = ifft1 (x, n, dim)
+// Description
+// Calculates the inverse discrete Fourier transform of a matrix using Fast Fourier Transform algorithm.
+// 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.
+// Calling Sequence
+// ifft1 (x)
+// ifft1 (x, n)
+// ifft1 (x, n, dim)
+// 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
+// Examples
+// x = [1 2 3; 4 5 6; 7 8 9]
+// n = 3
+// dim = 2
+// ifft1 (x, n, dim)
+// ans =
+// 2.00000 + 0.00000i -0.50000 - 0.28868i -0.50000 + 0.28868i
+// 5.00000 + 0.00000i -0.50000 - 0.28868i -0.50000 + 0.28868i
+// 8.00000 + 0.00000i -0.50000 - 0.28868i -0.50000 + 0.28868i
+
funcprot(0);
lhs = argn(1)
rhs = argn(2)
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