Region settings were ok, and I tried r.compress etc. Both files are
compressed automatically by GRASS, but the compressed file size is slightly
different, although the data is absolutely the same. Perhaps GRASS uses two
different ways to compress the data.?


Stefan
> 
> 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  *********
> > 
> 


