MATLAB: Index exceeds matrix dimensions.

indexing

for j=1:96 %Display the 3color channel
      for k=1:96
            mR=re(j,k,1);
            mG=re(j,k,2);
            mB=re(j,k,3);
       d=[mR mG mB];
       disp('d value is');  
       disp(d);

Best Answer

[m,n,p] = size(re) ;  
for j=1:m %Display the 3color channel
        for k=1:n
              mR=re(j,k,1);
              mG=re(j,k,2);
              mB=re(j,k,3);
         d=[mR mG mB];
         disp('d value is');  
         disp(d);
  end
  end

Related Solutions

MATLAB: How to divide rgb image into blocks using for loop and find the rgb value for each block

bs=8;
M=rand(768,768,3);
[r,c,p] = size(M) ;
row=r/bs;
col=c/bs;
mR=M(:,:,1);
mG=M(:,:,2) ;
mB=M(:,:,3) ;
idx = 1:bs:r+bs ;
pos = [idx(1:end-1)' idx(2:end)'-1] ;
iwant = zeros(bs,bs,row) ;
for i = 1:row
    iwant(:,:,i) = mR(pos(i,1):pos(i,2),pos(i,1):pos(i,2)) ;
end

MATLAB: Problem regarding n no quantum well

You are trying to store a 2 by 2 array of m values in to a single location in the numeric array M. That is not going to fit.

If, for some reason, you need the 2 x 2 block to be accessible through a single index, then change the line to

        M{j} = [m(j,1),m(j,2);m(j,3),m(j,4)];

and change the lines

        d=1;
      for j=1:n
          Mf(j)=M((2*j)-1)*M(2*j)*d;
          d=Mf(j);
      end

      d=ones(2,2);
      for j=1:n
          Mf{j}=M{(2*j)-1}*M{2*j}*d;
          d=Mf{j};
      end

However, keep in mind that the "*" operation between the two "M" accesses, and the "*" between the second "M" and the "d", are going to be matrix multiplications. If you want element-by-element multiplication, use ".*" instead of "*" .

Best Answer

Related Solutions

MATLAB: How to divide rgb image into blocks using for loop and find the rgb value for each block

MATLAB: Problem regarding n no quantum well

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