[GRASSLIST:7710] Raster Resolution (help requested)
Dave Sampson
gis at watersheds.ca
Mon Jul 25 14:55:38 EDT 2005
Hey yall,
In the past I have worked mainly with RASTER layers in GRASS and they
just worked (some how). Now I am working alot with vectors in GRASS. For
instance I have a region that was created througha v.in.ogr. Now when I
bring in the coresponding raster maps they are verry blocky unless I
view them from a far out zoom. My region settings are
projection: 0 (x,y)
zone: 0
north: 44.86371257
south: 44.67956501
west: -76.34802196
east: -76.08834984
nsres: 0.00920738
ewres: 0.01298361
rows: 20
cols: 20
I created a DEM from contour lines (v.surf.rst) and the results are
undesireable due to the chopyness of the raster. for instance instead of
smooth DEM I have lakes that contain one or two raster cells. The same
area would contain MANY contour lines. Cheers
A quick explanantion of what I've done and how to increase the
resolution of the rasters in my project would be appreciated.
--
+---------------------------------------------------------------+
|Dave Sampson: Geographic Information System (GIS) Technician |
| |
|Centre for Sustainable Watersheds |
|Cooperative Approaches to Protect Canada's Water Resources |
| |
|14 Water St, P.O Box 280. Portland Ontario, Canada. K0G 1V0 |
|Lat: 44.700 Long: -76.19 |
|www.watersheds.ca gis at watersheds.ca |
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