Hello
On 24/10/2010 19:29, ALT SHN wrote:
Regarding your first question, (convert floating point raster to
integer) you can use:
r.mapcalc "int_raster = int(fp_raster)
Hello
users,
I really could use some hints regarding this problem.
I want to generate a new raster from the following
_expression_ (using r.mapcalculator from QGIS GRASS plugin):
A*0.5+B*0.05+C*0.2+D*0.2+E*0.05
All rasters are integer16 geotiff anda have the same
resolution. I just get this message:
r.mapcalculator
ama...@permanent bma...@permanent cma...@permanent
dma...@permanent ema...@permanent =
formula=A*0.5+B*0.05+C*0.2+D*0.2+E*0.05 outfile=Erosao
Here, I think you want to skip the '@' character.
BTW, you can just run the above straight within r.mapcalc also:
r.mapcalc "Erosao = A*0.5 + B*0.05 + C*0.2 + D*0.2 +
E*0.05"
r.mapcalc
"Erosao" = "( " "a...@permanent" @PERMANENT" *0.5+ "
"b...@permanent" @PERMANENT" *0.05+ " "c...@permanent"
@PERMANENT" *0.2+ " "d...@permanent" @PERMANENT" *0.2+ "
"e...@permanent" @PERMANENT" *0.05)"
Illegal
filename. Character not allowed.
Invalid map
Parse error
![]() Calculating Erosao. Try expert
mode.
Finished with error
I suspect something very basic is missing but I don´t know
what could it be!!
Andre
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Associação Leonel Trindade
SOCIEDADE DE HISTÓRIA NATURAL
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Torres Vedras
Laboratório de Paleontologia e Paleoecologia: Polígono Industrial
do Alto do Ameal 2565-641 Ramalhal
http://alt-shn.blogspot.com
www.alt-shn.org
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