How do I replace/convert all zeros in 3rd-dimension to NaN

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NA
NA 2020-9-5
评论： NA 2020-9-5
Hi All,
I have a 5-D matrix: 5x16x20x3x15, where 5x16 is the data set; 20 is the number of trials (per experiment); 3 is the number of experiments (per participant); and 15 is the number of participants. If I had 1 particant that had a dataset (for only one exp) that was exclusively all zeros i.e. 5x16x20x2x2 was entirely zeros; would there be a way to convert the zeros to NaN, so that my mean and std calculations are not affected?
Cheers.

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David Hill
David Hill 2020-9-5
yourMatrix(:,:,affectedTrials,affectedExperiment,affectedParticipant)=nan;
If all trials of the affected experiment are zeros, then:
yourMatrix(:,:,:,2,2)=nan;
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David Hill
David Hill 2020-9-5
If your matrix is not too large, this will work fine.
for k=1:size(yourMatrix,3)
for n=1:size(yourMatrix,4)
for m=1:size(yourMatrix,5)
if nnz(yourMatrix(:,:,k,n,m))==0
yourMatrix(:,:,k,n,m)=nan;
end
end
end
end

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