bill lam wrote: > I would suspect H L C are undefined. No, they're defined prior to the for loop; essentially, each is a list of data.
> My general approach is to insert smoutput before and after every > control switch, eg I do this kind of thing, too, when I'm testing. Unfortunately, the script doesn't even get to the point where I can run the script with a filename argument (when the smoutput's will execute). It fails already during the loading process. Harvey ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
