two arrays defining 2d coordinates, as array indices, in matlab/octave
- by Jason
Hi,
I have a 2D array, call it 'A'. I have two other 2D arrays, call them 'ix' and 'iy'. I would like to create an output array whose elements are the elements of A at the index pairs provided by x_idx and y_idx. I can do this with a loop as follows:
for i=1:nx
for j=1:ny
output(i,j) = A(ix(i,j),iy(i,j));
end
end
How can I do this without the loop? If I do output = A(ix,iy), I get the value of A over the whole range of (ix)X(iy).
Thank you,
Jason
