MATLAB: How can i apply 1 of k coding scheme on 2D MATRIX

MATLABmatrix

the order of matrix can be any number except 1.

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C = randi([1,3],2,4)
[m,n] = size(C);
k = max(C(:));
out = zeros(n,k,m);
[ii,kk] = ndgrid(1:m,1:n);
out(sub2ind([n,k,m],kk(:),C(:),ii(:))) = 1

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MATLAB: How to compute frequency of rows for submatrices

D=[1 0 1 1; 0 1 1 1;1 1 0 1; 1 1 0 1;1 1 0 1; 0 1 1 1; 1 1 1 0; 0 1 1 1; 1 0 1 1; 1 0 1 1; 1 0 1 1; 1 1 0 0]
a=permute(reshape(D',size(D,2),3,[]),[2 1 3]);
uu=unique(D,'rows','stable');
[n,m]=size(uu);
for k=1:size(a,3)
  b=a(:,:,k);
  c=zeros(n,1);
  jj=0;
  for ii=1:n
      jj=jj+1;
      c(jj)=sum(ismember(b,uu(ii,:),'rows'));
  end
  out{k}=[uu c];
end
celldisp(out)

MATLAB: How to make a log operation for a matrix excluding the ‘-inf’ values

k should span from 1 to size(IDHMA,2), similar to ii:

for ii = 1: size (IDHMA,1)
for kk = 1 : size (IDHMA,2)
   IDHMAlog (ii,kk) = log(IDHMA(ii,kk))
   if IDHMA(ii,kk) == 0
       IDHMAlog(ii,kk) = NaN %exclude the"-Inf" values
   else 
       IDHMAlog (ii,kk) = log(IDHMA(ii,kk))
   end
end
end

I believe you could avoid the loops if you'd like:

IDHMAlog = log(IDHMA);
IDHMAlog(IDHMA==0) = NaN;

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MATLAB: How to compute frequency of rows for submatrices

MATLAB: How to make a log operation for a matrix excluding the ‘-inf’ values

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