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Re: [Axiom-developer] hyperlinked algebra

From: Ralf Hemmecke
Subject: Re: [Axiom-developer] hyperlinked algebra
Date: Fri, 09 Dec 2005 16:10:23 +0100
User-agent: Thunderbird 1.4 (X11/20050908)

C Y wrote:
--- Ralf Hemmecke <address@hidden> wrote:

XYPic:  Can create hyperlinked diagrams without requiring postscript
specific logic, but result renders slowly in Acroread.  Command syntax
is complex to say the least.  Does not have many packages written using

My from the point of being independent from PostScript, I would rather choose that package over pstricks. But as you say, it's quite a burden to learn it. And if the output renders slowly with acroread, that's another point against it.

Neither way has yet demonstrated the ability to reproduce these
diagrams in HTML, and I am not at all sure how we would even want to
proceed there.  Images of the diagrams with image maps defined?  Some
sort of fixed text positioning?

You are somewhat right. As for the web I would rather like to see something more interactive, like, for example, zooming in and out, selecting certain branches I want to see, etc. In fact, I am not sure whether I would want to see the graph printed.

When I started to look a bit more into the Algebra library shipped with Aldor, I took some time to produce a .fig of the categories, domains, and packages.

Click the "Graph" at

There are in fact two problems.
1) Get the graph right, ie, reflect the actual dom/cat/pgk in the
2) Show it in some form for humans.

The first point can certainly be done automatically some day. There should just be someone who would think of a nice format (SVG?) and writes a script which does this.

The second point is nearly impossible for a program. TouchGraph is not so bad, but I have the feeling that I don't easily get an _overview_ of the packages etc.

So getting a good Graph of the Algebra is not easy no matter whether we use pstricks or xypic.

Is there someone who is interested in (1)?


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