Subscript indices must either be real positive integers or logicals.pls help me with dis error

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Sony 2013-5-1

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 Subscript indices must either be real positive integers or logicals.
Error in ==> svlzfsig2>remTrend at 54
  rm=rm(winSize/2:length(rm)-winSize/2);
Error in ==> svlzfsig2>zeroFreqFilter at 41
  zfSig=remTrend(zfSig,winLength);
Error in ==> svlzfsig2 at 17
  zf=zeroFreqFilter(wav,fs,winLength);
Error in ==> EpochsbyZFF at 40
[zsp1,gclocssp1,epssp1,f0sp1]=svlzfsig2(sp1sig,fs,winlength);
Error in ==> UVRegion at 10
[zsp1,epochlocs,vgclocssp1,vf0sp1,vepochstr]=EpochsbyZFF(s,Fs);
Error in ==> hari_new at 36
[epochlocs,vgclocssp1_3,UvRegion,vf0sp1_3,vepochstr]=UVRegion(part3,Fs);

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Answer 1

Wayne King 2013-5-1

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You have to tell us what the sizes are of the variables in

rm=rm(winSize/2:length(rm)-winSize/2);

put a breakpoint in the code at that line and see what the dimensions are of rm and winSize

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Answer 2

Image Analyst 2013-5-1

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winSize is probably an odd number, like 5, so winSize/2 would be a fractional number like 2.5. There is no 2.5th element of the array. There is element #2 and element #3. You have to decide to use only even window sizes, or decide what to do in the case of an odd sized window.

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Sony 2013-5-3

function [zfSig]=zeroFreqFilter(wav,fs,winLength) dwav=diff(wav); dwav(end+1)=dwav(end); dwav=dwav/max(abs(dwav)); N=length(dwav); zfSig=cumsum(cumsum(cumsum(cumsum(dwav)))); winLength=round(winLength*fs/1000); zfSig=remTrend(zfSig,winLength); zfSig=remTrend(zfSig,winLength); zfSig=remTrend(zfSig,winLength); zfSig(N-winLength*2:N)=0; zfSig(1:winLength*2)=0; function [out]=remTrend(sig,winSize)

window=ones(winSize,1); rm=conv(sig,window); rm=rm(winSize/2:length(rm)-winSize/2);

norm=conv(ones(size(sig)),window); norm=norm(winSize/2:length(norm)-winSize/2);

rm=rm./norm; out=sig-rm; return; this is the code can u tell me where should i change such that it only allows evn numbers

Image Analyst 2013-5-3

When you call zeroFreqFilter(), just make sure the third argument is 2, 4, 6, 8, or any other even number. Make sure it's not 3, 5, 7, 9, or any other odd number because your program does not like that. I'm really not sure why you ask "how to to use only even window sizes?" - isn't it obvious? Or am I missing something?

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