I wrote: >In the Dictionary, at least, axis is defined early on, if not used much.
I'm wrong; it is used not-infrequently, and AFAICT at a quick glance, consistently. "Dimension" appears to mean the magnitude of an axis. In short. Given a the shape of an arbitrary J noun (a rank-1 array of non-negative integers): the rank is the length of that shape, an axis is an index into that shape (a member of i.rank ), and a dimension is the value at that index. -Dan ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
