[GRASS-user] weird r.thin output

I'm trying to digitize a paper map of an island. I've decomposed a scan of it into layers, one layer per file. One of the layers, polygons representing the high tide line, is a greyscale jpeg file with just two colours (0, 255). Imported into GRASS 6.3 (Linux 2.31.6 kernel) and processed with r

[GRASS-user] d.rast doesn't display on monitor

I'm expecting that the following commands in GIS.m should display a spearfish60 map on monitor x0: g.region rast=elevation@permanent d.mon x0 d.rast elevation@permanent They run without error but nothing appears on the monitor. I can display the map on Map Display 1, though. I'm using