row deletion not working, can you help?
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david ocallaghan
on 25 Apr 2019
Answered: david ocallaghan
on 26 Apr 2019
%I have the following fft calc;
freqMin = 10;
freqCap = 50;
te = (time>=5.0);
fs = (length(time(te))-1)/(max(time(te))-min(time(te))); % fs = 1000
NFFTt = length(Ty(te));
Yt = fft(Ty(te),NFFTt);
freqt = ((0:1/NFFTt:1-1/NFFTt)*fs).'; % freqt = 0, 1.9960, 3.9920, ..., 998.004
ampt = abs(Yt);
fftArrayt = [freqt,ampt]
idxFreqCapt = find(freqt > freqCap & freqt < freqMin) % returns this -> 0×1 empty double column vector
fftArrayt(idxFreqCapt,:) = [] % returns this ->
% fftArrayt =
%
% 1.0e+03 *
%
% 0 0.8824
% 0.0020 0.9291
% 0.0040 0.7940
% 0.0060 0.4000
% ...
%
% Is it because it's looking at the rows and not seeing the *1000 so ignoring the delete rule?
% Can you help me delete freqt below 10 and above 50?
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