Hello : I'm new in SAS, for my projet i have to use SAS to compute the FFT vector for a vector x : let x be a complex vector (size = n), I need to find the vector z (size = n) after a FFT with my vector x. So I'm looking for an function similar with z=fft(x) in R. On SAS documentation website, all i can find concerning FFT is these following link : http://support.sas.com/documentation/cdl/en/statug/63347/HTML/default/viewer.htm#statug_kde_sect015.htm -> theoretical explaination, not exctly what i need http://support.sas.com/documentation/cdl/en/imlug/59656/HTML/default/viewer.htm#langref_sect80.htm -> x here is a NUMERIC vector, so here comes my second question : HOW DO I WORK WITH COMPLEX NOMBER IN SAS ? -> this function returns a vector of size np*2 with np=floor(n/2+1), i don't understand why its size is not n*2 ? Thank you for your help Oscar C ... View more