Find , Skip Rows and Columns

I just started learning Matlab. Need to Find element in Matrix M but skip columns (cy1 cy2 cy3). [r,c]=find(M==1);

Answer 1

[Guillaume]

There are many ways to do this, you could just remove the unwanted columns from the matrix:

M(:, [cy1, cy2, cy3]) = [];
[r,c] = find(M == 1);

Or you could tell find you want all columns but the unwanted ones, using setdiff:

[r,c] = find(M(:, setdiff(1:size(m, 2), [cy1, cy2, cy3])) == 1);