Thank you Samuel! This works: resu(:,:)=abs(imdbl(:,:,1)-imdbl(:,:,2)) *.** max(imdbl(:,:,1),imdbl(:,:,2)); -- View this message in context: http://mailinglists.scilab.org/automatic-traverse-question-tp4036327p4036330.html Sent from the Scilab users - Mailing Lists Archives mailing list archive at Nabble.com.