[GRASS-dev] Speed map display in wxGUI on bigger monitors

Glynn Clements glynn at gclements.plus.com
Tue Aug 14 04:58:12 PDT 2012

Markus Neteler wrote:

> when working with the wxGUI on bigger monitors, it is rather slow
> when it comes to map display.
> Looking into the /tmp/ directory, I find fairly huge files which are
> generated and then combined for display.
> It is getting even worse when using GRASS over network.
> Question: why the uncompressed PNM/PPM format used by g.pnmcomp?

The original reason was that Tk doesn't support PNG.

That isn't relevant to the wxPython GUI. But the wxPython GUI should
really be doing its own compositing rather than relying upon

Glynn Clements <glynn at gclements.plus.com>

More information about the grass-dev mailing list