Index exceeds matrix dimensions error
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hi i was running this simple code,but i got this error,any idea how to fix it?
L = 140; % Length of signal
NFFT = 2^nextpow2(L); % Next power of 2 from length of y
YY = fft(rawdata,NFFT)/L;
((((((((((Index exceeds matrix dimensions.))))))))
Error in Untitled2 (line 11)
YY = fft(rawdata,NFFT)/L;
4 个评论
Star Strider
2014-12-10
Next step:
In the Command Window, type
which fft -all
after the error.
I get 6 answers, all in: C:\Program Files\MATLAB\.
采纳的回答
Image Analyst
2014-12-10
How can you take 256 samples from an array with 140 samples? Maybe you need to pad it with zeros or something
newArray = [oldArray, zeros(1, NFFT - length(oldArray))];
6 个评论
Image Analyst
2014-12-10
OK, glad it works, though I don't know why since the help for fft() said that it would do that padding for you.
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