On 1/26/07, Alasdair McAndrew <amca01 at gmail.com> wrote:
> I think a symbolic z-transform would be a very welcome addition to Maxima.
> I don't know if commercial Macsyma ever included z-transform routines, but
> if so it should be possible to port them to Maxima (assuming that you can
> obtain the source code).
Well, if we could (legally) obtain the source code (whether in Lisp or
in the Macsyma language) to commercial Macsyma, there are *many*
things we could improve. But as far as I know, the copyright holder
has no interest in releasing it under an free or open license.
If, on the other hand, there is code developed for commercial Macsyma
by *outside* developers, there is a chance they can be persuaded to
contribute their code to the Maxima project.
-s