Mark's message inspired me to keep my ghost chasing skills sharp, lest he take my business.
Anyway, I wrote : > I peeked around a little with 15!:6 and 15!:1 but other than the > odd data type, they don't seem exceptional. I was wrong. The results of 13!:34 _are_ exceptional. They (appear to) represent Roger's experiments with a bit datatype. I didn't notice this at first because given the scalar rank of m 13!:24 , I didn't think m 13!:24~ vector would show me anything m 13!:24~ scalar wouldn't. But it does. If I'm interpreting this right, the boolean results of = 13!:24~ 4 4 4 are all stored in a single byte. That's probably the reason 3!:1 =13!:34~ 4 4 4 crashes. Given the shape of the noun, it tries to read 3 words, causing a memory exception. -Dan ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
