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Diffstat (limited to 'man/spa.Rd')
| -rw-r--r-- | man/spa.Rd | 15 |
1 files changed, 8 insertions, 7 deletions
@@ -1,4 +1,4 @@ -% Generated by roxygen2 (4.1.1): do not edit by hand +% Generated by roxygen2: do not edit by hand % Please edit documentation in R/nonparam.R \name{spa} \alias{spa} @@ -9,30 +9,31 @@ spa(data, npad = 255) \arguments{ \item{data}{an \code{idframe} object} -\item{npad}{an integer representing the total length of each time series -to analyze after padding with zeros. This argument allows the user to -control the spectral resolution of the SDF estimates: the normalized +\item{npad}{an integer representing the total length of each time series +to analyze after padding with zeros. This argument allows the user to +control the spectral resolution of the SDF estimates: the normalized frequency interval is deltaf=1/npad. (Default: 255)} } \value{ an \code{idfrd} object containing the estimated frequency response } \description{ -Estimates Frequency Response with fixed frequency resolution using +Estimates Frequency Response with fixed frequency resolution using spectral analysis } \details{ The function calls the \code{SDF} function in the \code{sapa} package to -compute the cross-spectral densities. The method used is \strong{Welch's +compute the cross-spectral densities. The method used is \strong{Welch's Overlapped Segment Averaging} with a normalized \strong{Hanning} window. The overlap used is 50%. } \examples{ data(frf) frf <- spa(data) + } \references{ -Arun K. Tangirala (2015), \emph{Principles of System Identification: +Arun K. Tangirala (2015), \emph{Principles of System Identification: Theory and Practice}, CRC Press, Boca Raton. Sections 16.5 and 20.4 } \seealso{ |