[GRASS-user] Can I use r.mapcalc to create "sorted" elevation
malte at perlomat.de
Sun Dec 26 06:10:05 EST 2010
should be something like (untested)
r.mapcalc 'elevation300map=if((originalelevationmap >
if originalelevationmap > 300 get the value from the
originalelevationmap, otherwise the value should be NULL and all is
wirtten to the map elevation300map.
Otherwise take a closer look to
I haven't used r.mapcalc for a long time so I don't know if there had
been changes in the syntax - the trick is to use the if clause
implemented in r.mapcalc. I have no QGIS/GRASS installed on this pc...
I hope that helps and merry christmas
Am 26.12.2010 um 11:51 schrieb Catlike:
> Thank you for reading.
> I am trying to use r.mapcalc, through QGIS, to take an elevations
> with a wide variety of values and create a new elevations raster
> which only
> contains those cells that have a value over a certain number (in
> this case,
> 300 meters).
> Unfortunately, the QGIS graphic user interface does not show me what
> actual command I create is.
> What I get when I run the command is a new raster in which every
> cell has
> been converted to equal 300 meters!
> What should I do differently?
> Again, thank you.
> View this message in context: http://osgeo-org.1803224.n2.nabble.com/Can-I-use-r-mapcalc-to-create-sorted-elevation-raster-tp5867462p5867462.html
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