Hi, I'd like to ask if someone else experienced the following problem. I
digitized polygons and subsequently converted them to a cell map with
v.to.rast. When I use d.rast to display the map, the display process is
extremely slooooow. After performing the r.mapcalc operation r.mapcalc 'a=b'
(just to produce a new map with the same values) the display process is much
faster. Why is this?
Stefan Jaeger currently at
Dept. of Geography USGS
University of Heidelberg National Center
INF 348 Reston, VA 22092
69120 Heidelberg USA
Germany
stefan@geo0.geog.uni-heidelberg.de sjaeger@resdgs2.er.usgs.gov
********* sorry, no fancy name tag *********
Assuming that Stefan didn't change the region parameters in between the
two displays, the only thing I can think of is that the first version
(created by v.to.rast) is uncompressed, while the second (created by
r.mapcalc) is compressed. Note that I didn't check this out...
Martijn van Leusen
On Mon, 7 Mar 1994, Stefan Jaeger wrote:
Hi, I'd like to ask if someone else experienced the following problem. I
digitized polygons and subsequently converted them to a cell map with
v.to.rast. When I use d.rast to display the map, the display process is
extremely slooooow. After performing the r.mapcalc operation r.mapcalc 'a=b'
(just to produce a new map with the same values) the display process is much
faster. Why is this?
Stefan Jaeger currently at
Dept. of Geography USGS
University of Heidelberg National Center
INF 348 Reston, VA 22092
69120 Heidelberg USA
Germany
stefan@geo0.geog.uni-heidelberg.de sjaeger@resdgs2.er.usgs.gov
********* sorry, no fancy name tag *********