Hi, I'm a bit puzzled about the output of the go_fft function (actually the same code as what we have in gnumeric, may be gnumeric might use the goffice version?). I'm trying to use it to transform an NMR FID to a spectrum. When I use only the real data, things give the expected result, but I do not understand the output when I use the complex data input (see attached images). Is there some FFT expert around? Regards, Jean
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fft-with-complex.png
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fft-with-real.png
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