Etienne with the transformer the way it sits now, in most cases you will need to specify -te xmin ymin xmax ymax with gdalwarp to avoid that error
Brian On Tue, 2012-02-07 at 19:22 -0200, Etienne Tourigny wrote: > Even, Frank, > > thanks for your answers. I have run into a problem with using > gdalwarp with geoloc transform. > > In ticket #1895 there is an hdf file for which the HDF4 driver creates > GEOLOCATION metadata. > > Trying gdalwarp on it gives an error, and the result transform is > incorrect. Am I doing something wrong, or is this a bug? > > command is : gdalwarp -geoloc -t_srs EPSG:4326 > HDF4_SDS:UNKNOWN:"A2006005182000.L2_LAC_SST.x.hdf":13 tmp1.tif > more info below: > > $ gdalinfo HDF4_SDS:UNKNOWN:"A2006005182000.L2_LAC_SST.x.hdf":13 > Driver: HDF4Image/HDF4 Dataset > Files: A2006005182000.L2_LAC_SST.x.hdf > Size is 389, 602 > Coordinate System is `' > Metadata: > [...] > Geolocation: > LINE_OFFSET=0 > LINE_STEP=1 > PIXEL_OFFSET=0 > PIXEL_STEP=1 > SRS=GEOGCS["WGS 84",DATUM["WGS_1984",SPHEROID["WGS > 84",6378137,298.257223563,AUTHORITY["EPSG","7030"]],TOWGS84[0,0,0,0,0,0,0],AUTHORITY["EPSG","6326"]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9108"]],AUTHORITY["EPSG","4326"]] > X_BAND=1 > X_DATASET=HDF4_SDS:UNKNOWN:"A2006005182000.L2_LAC_SST.x.hdf":11 > Y_BAND=1 > Y_DATASET=HDF4_SDS:UNKNOWN:"A2006005182000.L2_LAC_SST.x.hdf":12 > Corner Coordinates: > [...] > > $ gdalwarp -geoloc -t_srs EPSG:4326 > HDF4_SDS:UNKNOWN:"A2006005182000.L2_LAC_SST.x.hdf":13 tmp1.tif > Creating output file that is 31119P x 5864L. > Processing input file HDF4_SDS:UNKNOWN:A2006005182000.L2_LAC_SST.x.hdf:13. > ERROR 1: Too many points (441 out of 441) failed to transform, > unable to compute output bounds. > 0...10...20...30...40...50...60...70...80...90...100 - done. > > $ gdalinfo tmp1.tif > Driver: GTiff/GeoTIFF > Files: tmp1.tif > Size is 31119, 5864 > Coordinate System is: > GEOGCS["WGS 84", > DATUM["WGS_1984", > SPHEROID["WGS 84",6378137,298.257223563, > AUTHORITY["EPSG","7030"]], > AUTHORITY["EPSG","6326"]], > PRIMEM["Greenwich",0], > UNIT["degree",0.0174532925199433], > AUTHORITY["EPSG","4326"]] > Origin = (-90.198287963867188,90.300000000000011) > Pixel Size = (0.015398926739995,-0.015398926739995) > Metadata: > AREA_OR_POINT=Area > Image Structure Metadata: > INTERLEAVE=BAND > Corner Coordinates: > Upper Left ( -90.1982880, 90.3000000) ( 90d11'53.84"W, 90d18' 0.00"N) > Lower Left ( -90.1982880, 0.0006936) ( 90d11'53.84"W, 0d 0' 2.50"N) > Upper Right ( 389.001, 90.300) (Invalid angle, 90d18' 0.00"N) > Lower Right ( 389.001, 0.001) (Invalid angle, 0d 0' 2.50"N) > Center ( 149.4013126, 45.1503468) (149d24' 4.73"E, 45d 9' 1.25"N) > > > Regards, > Etienne > > > On Tue, Feb 7, 2012 at 7:05 PM, Frank Warmerdam <warmer...@pobox.com> wrote: > > On Tue, Feb 7, 2012 at 7:40 AM, Etienne Tourigny > > <etourigny....@gmail.com> wrote: > >> Hi all, > >> > >> I would like to have information on the status of geolocation array > >> support in GDAL. > >> > >> The relevant RFC4 (http://trac.osgeo.org/gdal/wiki/rfc4_geolocate) is > >> still "under development", and the information there is that > >> GDALCreateGeoLocTransformer "is currently partially implemented". > > > > Etienne, > > > > I think the geoloc transformer received some fixes from someone > > other than myself and now is working reasonable well. It would > > be desirable to freshen up the RFC and get it passed but it isn't > > particularly a priority of mine so I'm not likely to drive it in the > > very near future. > > > > 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 Software Developer > _______________________________________________ > gdal-dev mailing list > gdal-dev@lists.osgeo.org > http://lists.osgeo.org/mailman/listinfo/gdal-dev _______________________________________________ gdal-dev mailing list gdal-dev@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/gdal-dev