Hello, all!

I'm stumped and need to know why the following "from" problem occurs
and how to do what I'd like to do:

No problem when numeric values are used:
   val=. 0 1 { 'mevema'
me
   val=. 2 3 { 'mevema'
ve

Problem when formulas are used instead of numeric values:
   j=. 0   [or 1 or 2]
   val=. (2*j) (1+2*j) { 'mevema'
|syntax error
|   val=.    (2*j)(1+(2*j)){'mevema'

Why does "from" work with numeric values but not with formulaic
versions of those same values for use inside a "for_j" loop to handle
multiple cases?

What I'm trying to do is to grab 2 letters at a time in sequence
through the 6-character combined planetary abbreviations for 3
planets.  Is there another way?  (Explicit code only, please, if you
give any examples.)

I just don't understand why one version works and the other doesn't.
Any help appreciated!

Harvey
----------------------------------------------------------------------
For information about J forums see http://www.jsoftware.com/forums.htm

Reply via email to