I have a dataset X(voxel*protein), it's size is 3694200*10. I used pca to reduce dimensionality and got a matrix of size 3694200*4. The question is that I need to know which 4 proteins are remained. How can I get the original column IDs(0-9) of the 4 proteins?
My code: [COEEF,SCORE,LATENT] = pca(X); cumVar = cumsum(LATENT)./sum(LATENT); reducedData = SCORE(:,1:4);
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