search for: irequ

I am using the function 'spectrum'. It returns two arrays that are interesting to me. One would be the wieght or density of a given frequency with the irequency given in another array. I would like to take the top 'n' weights which would be the top 'n' frequencies contributing to the signal. One way to do this would be to use 'sort' which would sort the weights but I then lose which frequency that weight corresponds to. What wou...