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Topic: Transform Time domain data ( in txt format) to Frequency Domain
Replies: 1   Last Post: Feb 4, 2013 3:32 PM

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Derek Goring

Posts: 3,922
Registered: 12/7/04
Re: Transform Time domain data ( in txt format) to Frequency Domain
Posted: Feb 4, 2013 3:32 PM
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On Tuesday, February 5, 2013 6:03:08 AM UTC+13, Meran wrote:
> Dear ALL
> I am trying to transform data from time domain which i have them in" txt" format to frequency domain by using " FFT ". The txt data has to columns ( 1st :Time) and (2nd :amplitude). I don't know , i need to use FFT(x) or FFT(x,n) and how can plot the data in have in time domain and plot in frequency Domain .
> Thanks for you Help .

You need to convert from 'txt' format (whatever that means) to numbers before you plot or use fft:
help str2num

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