I cannot figure out how to make a "simple" verb that finds the indices (like i.) but gives the next index if there are multiple occurrences, like this
0 0 2 0 2 0 3 3 foo 2 2 2 3 4 2 4 8 6 8 I have a hunch a boolean matrix is involved but there I get stuck. Kr, Pablo ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm