How to make FFT plots in Matlab?

[suddy72]

Hi people,

Anyone know how i produce an FFT plot in matlab. I have the FFT data as raw excel data, all i want to do is feed this excel data into MATLAB and procuce the relevent FFT plot. Anyone know how this is done ?

Cheers.

 

[echo47]

FFT plots in Matlab

I assume you want MATLAB to compute the FFT.

Try typing a column or row of numbers into Excel, save it to "xdata.xls", and then run this MATLAB command:
plot(abs(fft(xlsread('xdata.xls'))));

MATLAB provides other methods for accessing Excel data, including DDE transfers to/from the Excel window. Try searching MATLAB help for "excel".

 

[rajsrikanth]

Re: FFT plots in Matlab

import the data into the matlab( u have an option to import the data in to matlab) then draw the plot.