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hi, i can?t download a file in access. when i type: > library(foreign) > read.spss("H:\Desktop\bd1\experiencia1") comes the error: Error in read.spss("H:Desktop\bd1experiencia1") : unable to open file do you know what is the problem? can you help me? margarida,porto,portugal

Hi! I am using the fft() function the base package to transform some 1d signal. If I use this standar fucntion I get a very huge first fourier coeficient. I think this dues to the handling of the borders of the signal. Usually in fft especially in image processing the signal is simulated to be continuous by adding the signal several times periodically. My question is, is there some function