On Wed, Jun 25, 2008 at 2:09 PM, Jean-Sébastien Guay < [EMAIL PROTECTED]> wrote:
> Hi Glenn, > > From the looks of your coordinates, UTM Zone 40N would be a good choice >> for a projected SRS. >> > > It should actually be UTM zone 32V, unless I made a mistake somewhere. It's > the tip of the Norwegian peninsula. > > The -a_srs argument will accept many things including PROJ4, WKT, or a >> file containing a WKT. >> >> Try this: >> >> gdal_translate -a_srs "+proj=utm +zone=40 +datum=WGS84" infile outfile >> > > I tried that, using 32 instead of 40. > > gdal_translate -a_srs "+proj=utm +zone=32 +datum=WGS84" 32V.tif > 32V_wgs84.tif > > It doesn't seem to change much, the model generated by vpb and then loaded > still seems to be using the latitude/longitude in degrees as units (it's > about 9 units by 8 units in size). > > I'm using this command to generate the model: > > osgdem -d 32V_wgs84.tif --POLYGONAL --LOD -v 0.0001 -l 8 -o > database/32V_wgs84.osg > > gdalinfo on the new file gives: > > Driver: GTiff/GeoTIFF > Files: 32V_wgs84.tif > Size is 271, 241 > Coordinate System is: > PROJCS["unnamed", > GEOGCS["WGS 84", > DATUM["WGS_1984", > SPHEROID["WGS 84",6378137,298.2572235630016, > AUTHORITY["EPSG","7030"]], > AUTHORITY["EPSG","6326"]], > PRIMEM["Greenwich",0], > UNIT["degree",0.0174532925199433], > AUTHORITY["EPSG","4326"]], > PROJECTION["Transverse_Mercator"], > PARAMETER["latitude_of_origin",0], > PARAMETER["central_meridian",9], > PARAMETER["scale_factor",0.9996], > PARAMETER["false_easting",500000], > PARAMETER["false_northing",0], > UNIT["metre",1, > AUTHORITY["EPSG","9001"]], > AUTHORITY["EPSG","32632"]] > Origin = (2.983333335000000,64.016665864999993) > Pixel Size = (0.033333330000000,-0.033333330000000) > Metadata: > AREA_OR_POINT=Area > Image Structure Metadata: > INTERLEAVE=BAND > Corner Coordinates: > Upper Left ( 2.9833333, 64.0166659) ( 4d30'40.62"E, 0d 0'2.08"N) > Lower Left ( 2.9833333, 55.9833333) ( 4d30'40.62"E, 0d 0'1.82"N) > Upper Right ( 12.0166658, 64.0166659) ( 4d30'40.91"E, 0d 0'2.08"N) > Lower Right ( 12.0166658, 55.9833333) ( 4d30'40.91"E, 0d 0'1.82"N) > Center ( 7.4999996, 59.9999996) ( 4d30'40.76"E, 0d 0'1.95"N) > Band 1 Block=271x15 Type=Int16, ColorInterp=Gray > NoData Value=-32768 > > Help? :-) Sorry I had my lat and long reversed ;) Anyway, the new SRS looks right, what does the .osg file say? The CoordinateSystemNode WKT? Sounds like a tiny file, can you attach it? -- Glenn Waldron : Pelican Mapping : http://pelicanmapping.com : 703-652-4791
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