[Maxima-discuss] Basic question on paths (for luatree.{mac, lisp, lua})

[Eduardo O. <edu...@gm...>]

Hi all,

I finally wrote a small program in Maxima that I think that is worth
sharing - in the sense of it having a screenshot, a github page, and
other such things. At this moment it is in these three files - the
.htmls are more readable:

  http://angg.twu.net/MAXIMA/luatree.mac.html
  http://angg.twu.net/MAXIMA/luatree.lisp.html
  http://angg.twu.net/MAXIMA/luatree.lua.html

  http://angg.twu.net/MAXIMA/luatree.mac
  http://angg.twu.net/MAXIMA/luatree.lisp
  http://angg.twu.net/MAXIMA/luatree.lua

Can I ask a basic question on style? Here it goes...

Right now all paths are hardcoded. I run it from Maxima like this:

  load("~/MAXIMA/luatree.mac");
  MV2 : 'integrate(fp(g(x))*gp(x), x, a, b) = 'integrate(fp(u), u, g(a),
g(b));
  luatree(MV2);

The .mac file loads a Lisp file by running this,

  load("~/MAXIMA/luatree.lisp");

and a function in the .lisp file runs this:

  (uiop:run-program "~/MAXIMA/luatree.lua" :input s :output :lines)

Can you recommend me good ways to de-hardcode these paths, and make
everything work by requiring only that the three files be put in the
same directory?

Btw, the output of the "luatree(MV2);" above is this:

  =___________________.
  |                   |
  integrate__.__.__.  integrate__.__.__.
  |          |  |  |  |          |  |  |
  *___.      x  a  b  fp         u  g  g
  |   |               |             |  |
  gp  fp              u             a  b
  |   |
  x   g
      |
      x

Thanks in advance! =)
  Eduardo Ochs
  http://angg.twu.net/eev-maxima.html