Hey guys,
A colleague is having problems with an archaic Grass project in that
geotiffs created from rasters in this Location only display correctly in
ArcGIS in UTM Zone 20 despite g.proj -p saying that the Location is UTM Zone
19. All the projection info I can find on data in this Location says it's
UTM 19, but the data displays as UTM20. We're pretty sure that the ArcGIS
data used as a check against the Grass data is correct (let's assume so for
the sake of this argument). Is it ok to go ahead and make backups of
PROJ_INFO and PROJ_UNITS, delete the originals, and then run g.setproj to
make new info files? Are there any dangers to doing this? This is uncharted
waters for me.
~ Eric.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
On Fri, 12 May 2006 13:46:26 -0300
"Patton, Eric" <epatton@nrcan.gc.ca> wrote:
Hey guys,
A colleague is having problems with an archaic Grass project in that
geotiffs created from rasters in this Location only display correctly
in ArcGIS in UTM Zone 20 despite g.proj -p saying that the Location
is UTM Zone 19.
What do the gdalinfo say about your geotiffs?
All the projection info I can find on data in this
Location says it's UTM 19, but the data displays as UTM20. We're
pretty sure that the ArcGIS data used as a check against the Grass
data is correct (let's assume so for the sake of this argument). Is
it ok to go ahead and make backups of PROJ_INFO and PROJ_UNITS,
delete the originals, and then run g.setproj to make new info files?
Are there any dangers to doing this? This is uncharted waters for me.
You could use gdal_translate -a_srs to correct the projection in the
output file.
Maciek
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