[GRASS-user] Monitor dislay time vs psmap display time

Markus Neteler neteler at osgeo.org
Wed Jul 1 14:38:20 PDT 2020


On Wed, Jul 1, 2020 at 11:04 PM Rich Shepard <rshepard at appl-ecosys.com> wrote:
>
> A 5m DEM displays very quickly on the monitor (using d.rast
> map=basin_5mtopo) but when that map is the raster in a psmap script it takes
> a very long time for grass to process the script (with the vector overlays).
>
> Why might this be?

The monitor shows pixels only at needed resolution (it uses nearest
neighbors to downsample on the fly) while ps.map operates at map
resolution (not sure if that can be set differently besides resampling
it to a new map at lower resolution if acceptable for the printing).

HTH,
Markus


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