sgolayfilt y = sgolayfilt (x) y = sgolayfilt (x, p) y = sgolayfilt (x, p, n) y = sgolayfilt (x, p, n, m) y = sgolayfilt (x, p, n, m, ts) x: vector or matrix of real or complex numbers p: polynomial order, real number less than n, default value 3 n: integer, odd number greater than p m: vector of real positive valued numbers, length n ts: real number, default value 1 This function applies a Savitzky-Golay FIR smoothing filter to the data given in the vector x; if x is a matrix, this function operates on each column. The polynomial order p should be real, less than the size of the frame given by n. m is a weighting vector with default value identity matrix. ts is the dimenstion along which the filter operates. If not specified, the function operates along the first non singleton dimension.