On 11-01-07 04:18 PM, James Hiebert wrote:
All,
Below is a question/probelm from one of my co-workers (who doesn't (yet)
want to subscribe to the list).
~James Hiebert
From: Hailey Eckstrand<hail...@uvic.ca>
Date: Fri, 7 Jan 2011 13:05:10 -0800
Hello all,
I am trying to reproject a geotif using gdalwarp:
gdalwarp -t_srs "+proj=longlat" -s_srs "+proj=lcc +lat_0=47.5 +lat_1=30.0 +y_0=3200000.0 +lat_2=60.0
+x_0=3825000.0 +lon_0=-97.0 +a=6370000" -r bilinear -srcnodata "1e20" -dstnodata "1e20" -tr
0.5 0.5 -te -137.812943839532 33.8985446218588 -102.312943839532 63.3985446218588 mm5i-lcc.tif mm5i-latlong.tif
ERROR 1: Translating source or target SRS failed:
+proj=lcc +lat_0=47.5 +lat_1=30.0 +y_0=3200000.0 +lat_2=60.0 +x_0=3825000.0
+lon_0=-97.0 +a=6370000
When I use the proj/invproj unix command, it works fine:
invproj +proj=lcc +lat_0=47.5 +lat_1=30.0 +y_0=3200000.0 +lat_2=60.0 +x_0=3825000.0
+lon_0=-97.0 +a=6370000<< EOF
James,
I would suggest you collegue be more explicit about the earth models.
PROJ.4 definitions passed to GDAL utility are parsed by GDAL, converted
to WKT, and then later converted back to PROJ.4 format and so not all
definitions supported by PROJ.4 are necessarily supported by GDAL.
In this case I suspect GDAL is confused by the lack of a +b value for
the lcc projection. It may also not handle a missing earth model on the
geographic coordinate system well.
Best regards,
--
---------------------------------------+--------------------------------------
I set the clouds in motion - turn up | Frank Warmerdam, warmer...@pobox.com
light and sound - activate the windows | http://pobox.com/~warmerdam
and watch the world go round - Rush | Geospatial Programmer for Rent
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