[GRASS-user] rasterizing points

GRASS GRASS user
1

Hi all, I'm trying to raster a vector layer with 3 or 4 points but I don't
know why it is not working.
The command I'm using is:

v.to.rast input=landmarks_v output=landmarks_r value=1 use=val

but it simply generates an empty raster map. I think that grass is trying
to rasterize lines:

Loading vector information ... 0 mins 00 secs
Sorting areas by size ... 0 areas 0 mins 00 secs
Processing lines ... 4 lines 0 mins 00 secs
Writing raster map ... 0 mins 00 secs
Creating support files for raster map ... 0 mins 00 secs

but as the information are points it is not generating any line. I want to
create a raster map with null values except for 3 or 4 cells (where there
are points) with '1'.
Any idea about how it can be done?

Thanks!

Xavi

2

xrubio@arsystel.com wrote on 03/21/2007 11:38 AM:

Hi all, I'm trying to raster a vector layer with 3 or 4 points but I don't
know why it is not working.
The command I'm using is:

v.to.rast input=landmarks_v output=landmarks_r value=1 use=val

but it simply generates an empty raster map. I think that grass is trying
to rasterize lines:

Loading vector information ... 0 mins 00 secs
Sorting areas by size ... 0 areas 0 mins 00 secs
Processing lines ... 4 lines 0 mins 00 secs
Writing raster map ... 0 mins 00 secs
Creating support files for raster map ... 0 mins 00 secs

but as the information are points it is not generating any line. I want to
create a raster map with null values except for 3 or 4 cells (where there
are points) with '1'.
Any idea about how it can be done?
  
what does
r.univar landmarks_r
say?

To see the map, try this:

g.region rast=landmarks_r -p
d.erase
d.rast landmarks_r

Markus

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ITC -> dall'1 marzo 2007 Fondazione Bruno Kessler
ITC -> since 1 March 2007 Fondazione Bruno Kessler
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