On Wed, Aug 02, 2017 at 07:45:17PM +0200, John Darrington wrote: > A number of users have been commenting for a while that PSPP's > charts are somewhat clunky. > > Because of this, I've been looking for a while for graphing libraries > to help us. There is of course gnuplot (which despite its name is not > GNU software), but that has some practical and some licensing issues. > Amoung others that I found is GseGrafix (which IS a GNU program). > This certainly doesn't have any licensing problems (it's GPLv3+). But > 1. It needs gnome canvas which does not typically get installed on > modern GNU/Linux distros, and is incompatible with Gtk+3 anyway; and > 2. It's not a library. > > So I've forked it and replaced gnomeCanvas with cairo, and massaged it > a little to provide a callable API. I've registered a project at > http://sv.gnu.org/p/gsegrafix-experimental and hacked the PSPP code to > use this library. > > I'm attaching results of a simple graph with both the new an the old. > > What do people think about replacing our existing charting code with > GseGrafix? > > The advantages that I can see are: > > 1. Less code in PSPP. > > 2. Clean separation of the charting code. > > 3. Better (in my opinion) graphics. > > 4. 3D plots can be generated. > > 5. If we can persuade GseGrafix upstream to accept our changes, then > somebody else maintains it for us. > > On the down side: > > 1. GseGrafix currently lacks some types of chart (eg: BoxPlots, > Piecharts) > > 2. It's another library that users have to install.
The results look nicer than what we have. Does geografix provide any provisions for interactive editing? That is a feature that I imagine our users would really appreciate. _______________________________________________ pspp-dev mailing list pspp-dev@gnu.org https://lists.gnu.org/mailman/listinfo/pspp-dev
