indexing of a matrix

hi, i av a 200*3588 matrix and i want to index paired numbers from each column.is there a matlab function that will help me do it or do i av to do it manually? thanks in advance

[Fangjun Jiang]

Use a small matrix to explain what you need.

Answer 1

[Walter Roberson]

rowidx = [rowidx1, rowidx2, rowidx3, ... rowidx200];
matind = sub2ind(size(YourMatrix), [rowidx; 1+rowidx], repmat(1:size(YourMatrix,2), 2, 1) );
pairedValues = YourMatrix(matind);