MATLAB: How to overcome the “Subscript Indices” problem

subscript indices

Firstly, I know what it is and why it happens. I just want to know how to overcome the problem.
My code is as followed:
b=zeros(3,3,3); %returns an n-by-n matrix of zeros. 
a=[0 1 1; 1 0 1; 1 1 0];
   [r, c]=size(a);
  for i = 1:r
   b(a(i,c-2),a(i,c-1),a(i,c)) = 1;
  end
  [m, n, o]=size(b);
  figure (1)
  [x,y,z] = meshgrid(1:m,1:n,1:o);
  scatter3(x(:),y(:),z(:),90,b(:),'filled')

Best Answer

Thomas
your are trying to index b with a null.
In MATLAB matrix indices have to be >0, and in your for loop you are trying to index b with elements of a, that some happen to be zero.
To index b you need 3 indices, that for instance could be
   b(c-2,c-1,c) = 1;
This fixes the
'Subscript indices ..'
crash, yet since don't know the matrix you want to generate, cannot go anyfurther without knowing what do you really want in matrix b.
If you find this answer of any help solving your question,
please click on the thumbs-up vote link, or mark it as accepted
thanks in advance
John
jgb2012@sky.com
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