How to do matrix operation programatically in lisp

I'm with Ray on this one in both respects:
1. I don't use them, but
2. I think that imaxima or emaxima has exactly the goal you need.
If they work for you, your need for SLIME is met.

However, it may be worth pointing out that, just as in lisp, there
are subtleties that break this model.
a. the meaning of an expression may vary depending on compiler declarations
etc in the file in which it is embedded.
b. the meaning of an expression may vary depending on the execution
environment.

so "compile expression" may not really work.  Simple example (where Ray and
I were working on the same file), we changed the input syntax of lisp so
that quad-precision numbers could be read as #q3.1415926q0   for example.
This broke the ability of emacs to grab an s-expression in the file..

But basically, I think it would be much neater to use Maxima as your base
(or modify the parser/front end to Maxima), and add to it.   If a Matlab
language parser is what you need, I think that already exists somewhere.
RJF

> -----Original Message-----
> From: maxima-bounces at math.utexas.edu 
> [mailto:maxima-bounces at math.utexas.edu] On Behalf Of Raymond 
> Toy (RT/EUS)
> Sent: Tuesday, November 27, 2007 6:39 AM
> To: klin at umd.edu
> Cc: maxima at math.utexas.edu
> Subject: Re: [Maxima] How to do matrix operation 
> programatically in lisp
> 
> Kun Lin wrote:
> >> I'm curious why you don't just want to use maxima itself 
> and add the 
> >> necessary stuff you need in Lisp?  You certainly can use 
> maxima as a 
> >> library for your Lisp code, but that seems backward.
> > 
> > humm...
> > 
> >   My reason mostly is to stay in the emacs/slime 
> development environment.
> >   I guess i just really like C-c C-k (compile file) or 
> C-M-x (compile 
> > expression).
> >   In addition, since i am a beginner C-c C-d d and C-c C-d 
> h really helps.
> 
> Ah, ok.  I confess that when working with maxima, I use neither slime 
> nor imaxima or emaxima or whatever they're called.  I just basically 
> reload the whole file that I'm editing.  That's not so nice 
> compared to 
> slime.
> 
> And the little bit of code I posted earlier to allow slime to talk to 
> maxima doesn't work so well, at least with the version of 
> slime I have. 
>   I should try to update that so that it works.  I should 
> also learn how 
> to use emaxima or imaxima, or whatever they're called.
> 
> If both of those are working, you should get a nice slime environment 
> for hacking on the Lisp parts, and a nice maxima environment 
> for working 
> with maxima code.
> 
> Ray
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