From: "Robert Dodier" <robert.dodier at gmail.com>
Date: Sun, 7 May 2006 10:06:14 -0600
...
Maxima allows subscripted variables x[1], x[2], x[3], ...
Hello Robert
I was aware of the existence of subscripted-vars (but not the
clever usage that you showed me for fncs), but stopped
using them because of a display problem. Perhaps some kind
reader can help.
A complicated polynomial with a lot of x[2] variables was
easier to read than x2 etc, when I was able to use
`imaxima' (inside of Emacs), so that the subscripted-vars
were really displayed as ... variables with subscripts.
However, I now run `imaxima' with
display2d : true ;
rather than in its graphical mode
display2d : imaxima ;
because the latter produces an error with almost everything
I do. For instance
/--------------------------------------------------------\
(%I130) display2d : true ;
(%I131) rand[i,j] := random(10);
(%o131) rand := random(10)
i, j
\________________________________________________________/
and everything is copacetic. But
/--------------------------------------------------------\
(%I132) display2d : imaxima ;
(%I133) rand[i,j] := random(10);
Maxima encountered a Lisp error:
EVAL: too many parameters for special operator IF: (IF (ATOM (CADR X))
(PROGN
(SETQ L (TEX (TEXWORD F) L NIL LOP 'MFUNCTION) R
(NCONC (TEX-LIST (CDR X) NIL (LIST "}") ",") R))
(NCONC L (LIST "_{") R))
(SETQ L (TEX (TEXWORD F) (APPEND L (LIST "\\isubscript{")) NIL LOP 'MFUNCTION)
R (NCONC (TEX-LIST (CDR X) NIL (LIST "}") ",") R))
(NCONC L (LIST "}{") R))
\________________________________________________________/
FWIW, I run Gentoo Linux and the CL is I use is Clisp.
Is the-above likely to be a problem with *my* Emacs setup,
or with the way that Gentoo installs Clisp+Maxima+Imaxima?
Sincerely, -Jonathan
--
Prof. Jonathan LF King Mathematics dept, Univ. of Florida
<squash at math.ufl.edu>, <http://www.math.ufl.edu/~squash/>;