[GRASS-dev] G7 d.mon wx0 initialization issue for large raster maps

[Markus Neteler]

Hi,

when trying to render a large raster map with d.rast in the "command
line version"  (d.mon wx0), then it tries to use the current region
which leads to a cairo memory error.

It seems that the wxGUI is initializing the display in a more
reasonable way to downsample the map to be rendered on the fly since
it makes no sense to render it at original resolution. This "magic" is
yet missing in d.mon.

Where is that calculated in wxGUI to get an idea about the calculation
of map display window size versus raster map size/resolution?

thanks
Markus