v.to.rast

[martijn at scanner.frw.uva.nl]

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 at geo0.geog.uni-heidelberg.de	sjaeger at resdgs2.er.usgs.gov
> 
> *********  sorry, no fancy name tag  *********
>