So you are after: [50, 25; 5, 10; 65,65] ?
[nRowsA, nColsA] = size(A);
ca = [1 3]; la = 1;
nRowsOut = nRowsA - length(la); % Result should have this many rows
nColsOut = nColsA - length(ca); % Result should have this many columns
Logical array same size as input
maskA = true(nRowsA, nColsA);
1 1 1 1
1 1 1 1
1 1 1 1
1 1 1 1
% Change all rows to false that are given in variable la
maskA(la,:) = false;
0 0 0 0
1 1 1 1
1 1 1 1
1 1 1 1
% Change all cols to false that are given in variable ca
maskA(:,ca) = false;
0 0 0 0
0 1 0 1
0 1 0 1
0 1 0 1
% Now left with zeros for rows and columns we don't want.
trimmedA = A(maskA); % Extract elements from A using the maskA
50
5
65
25
10
65
% From example there were two columns over 3 rows
reshaped2array = reshape(trimmedA,nRowsOut, nColsOut);
50 25
5 10
65 65
The arrays you see are just output from the line above it and for some clarity in what is going on.
There probably is an easier way which no doubt someone will mention...
