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When reprojecting either a vector or a raster layer problems could arise if the layer and the project are not in the same crs. Remember that by default Qgis assumes that everything you load is lat lon wgs84. Make sure that your raster layer and the project are in the same crs.<div><br></div><div>Hope it helps<br><div><br>Gerardo Jiménez Delgado<br>Instituto de Investigaciones Antropológicas<br>Universidad Nacional Autónoma de México<br>Ciudad Universitaria s/n<br>Coyoacan 04510
Mexico City<br>Mexico
56 22 95 16<br><br><div><hr id="stopSpelling">Date: Sat, 19 Nov 2011 17:26:23 +0000<br>From: roderick.salisbury@gmail.com<br>To: qgis-user@lists.osgeo.org<br>Subject: [Qgis-user] Error when reprojecting a raster in QGIS<br><br>Dear all,<br>I get an error when trying to warp a tif file in QGIS:<BR>
ERROR 1: Too many points (35721 out of 35721) failed to transform, unable to compute output bounds.<BR>
I am using QGIS 1.7.0 Wroclaw with gdal 1.8. I am trying to warp
from ETRS89 to HD72 EOV. There was an error in the data, with the UTM
zone added to the eastings. That is, the x coordinates read 34327213.050
when they should read 327213.050 in UTM zone 34N. I have tried changing
the .tfw file but this did not help. Then I translated the tif to a
.vrt and edited the vrt, removing the rogue 34, and fixing the extent.
This also did not help - I still get the same error when I try to warp from the vrt, or using a tif translated form the new vrt.
In layer properties, this new raster now has the same origin, extent and SRS
as other similar (no error) rasters, but only this one gives the error.<BR>
How do I work this out? Any suggestions will be greatly appreciated. <BR>
Cheers, Rod<BR><br clear="all"><br>-- <br>Roderick B. Salisbury, PhD<br>School of Archaeology and Ancient History<br>University of Leicester<br>University Road<br>Leicester, LE1 7RH, UK<br><br>Mobile: +44 (0)7530 561 622<br>
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