Re: graphing in gnumeric

["William Skaggs" <weskaggs primate ucdavis edu>]

> Your timing is excellent.  I've been working on something for
> gnumeric for several months and finally started producing usable
> code in the last few weeks.  The emphasis is on getting data and
> allocation working smoothly within gnumeric, and that is now mostly
> done (yay!).  I threw together a cheesy rendering scheme using
> FooCanvas and some raw gdk drawing primitives which looks butt ugly.
> I'll be replacing it with a libart based approach using something
> similar to Jon Trowbridge's libguppi/canvas abstraction later this
> week then throwing things into cvs.

Okay, please announce when ready.

It turns out, incidentally, that rendering is only a small part of
the work in plotting, and can be isolated from the rest.
Generally, about 2/3 of the effort goes into setting up the
interactions that allow users to contol the type and shape of the
plots.  It might be useful to give some thought to a specification
of the types of plots that gnumeric wants and the aspects of them
that users should be able to control.  (Maybe there is a sort of
implicit specification in the things that guppi was able to do in
the previous incarnation of gnumeric, but I'm not familiar with it.)

Regards,

    -- Bill