Charles, I am not an expert in fv&j but I have enjoyed it immensely, also. I was able to eschew the index error by changing your s's to s0's: s0=: 1 1$1 s=: sier^:9 s0 .
However I still get a file write implied error because the last line returns a _1 instead of an file size. So I change that to the following, and succeeded. (pa1;s) write_image jpath '~temp/temp.png' 2313 -- (B=) <-----my sig Brian Schott ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
