Retrieving the elements of a matrix with negated exact indexing with index matrix?

Question

For example I have A=[11 24 33 47 52 67] and I have indices matrix as I = [2 3] so I want to have the elements of A from the indices other than ind

Answer 1

go for

  idx = logical(ones(size(A)));   % // all indices here

or, as @Gunther Struyf suggests,

  idx = true(size(A));

then

  idx(I) = 0;                       % // excluding not desired indices    
  B = A(idx);                       % // selection

Alternatively

 B = A;
 B(I) = [];

Answer 2

You can also make use of setdiff to exclude indices. Here's a one-liner for you:

B = A(setdiff(1:numel(A), I))