% Generated by roxygen2 (4.1.1): do not edit by hand % Please edit documentation in R/nonparam.R \name{spa} \alias{spa} \title{Estimate frequency response} \usage{ 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 frequency interval is deltaf=1/npad. (Default:)} } \description{ Estimates Frequency Response with fixed frequency resolution using spectral analysis }