Hi Shayne, Thanks for the reply. I have tried all sorts to try and make this geocentric, but alas it seems to fail. My data is in .asc format for the terrain and is called the panorama from OS(https://www.ordnancesurvey.co.uk/opendatadownload/products.html) Also the .ntf files my gdal fails with unrecognised format(FW Tools under windows).
OSGDEM fails with the following message after using gdalwarp as suggested: Skipping source contertedtiffasc_warped\/tr26.asc-warp.tif as its extents don't overlap destination extents The formats are : Data type: Vector (Contours), Grid (DTM) Supply format: DXF [Contours],ASCII grid [DTM],NTF [DTM] I just used the ACII files, I am guessing the NTF files would be better but my FW Tools won't recognise them, any ideas? Regards Martin. -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Tueller, Shayne R Civ USAF AFMC 519 SMXS/MXDEC Sent: 10 November 2010 22:47 To: OpenSceneGraph Users Subject: Re: [osg-users] osgdem/vpb OS Open Data and geocentric Try the following gdal command on your data (infile) that is not geo-referenced... gdalwarp -t_srs "+proj=latlong +datum=WGS84" -r bilinear <infile> <outfile> and feed the resulting outfile into osgdem... -Shayne -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Martin Naylor Sent: Wednesday, November 10, 2010 11:58 AM To: 'OpenSceneGraph Users' Subject: [osg-users] osgdem/vpb OS Open Data and geocentric Hi all, I have downloaded the free Ordinance Survey data and have managed to convert the height data and raster data using gdal_translate. Everything works brilliant when the option --geocentric is omitted. Once --geocentric is included osgdem finished within about 20 seconds my planet now looks like a sphere with bobbles attached, almost like a leather football. I am sure it's something to with the data and the format it is in, here is gdalinfo of my converted data (excluding colour data). Does anyone know how I should convert it over so I can get a whole earth, I am guessing it's something to do with the format although osgdem reprojects the data when --geocentric is included? Using the latest SVN as of last Friday. The OS data is the best FREE data I have come across so far, although I am sure there must be higher resolution height data. d:\OS OPENDATA\build\ras250_gb_converted>gdalinfo HP.tif-geo.tif Driver: GTiff/GeoTIFF Files: HP.tif-geo.tif Size is 4000, 4000 Coordinate System is `' Origin = (400000.000000000000000,1300000.000000000000000) Pixel Size = (25.000000000000000,-25.000000000000000) Metadata: TIFFTAG_IMAGEDESCRIPTION=1:250 000 TILE HP.TIF TIFFTAG_DATETIME=2010:05:04 10:31:47 TIFFTAG_COPYRIGHT=ORDNANCE SURVEY CROWN COPYRIGHT 2010 TIFFTAG_XRESOLUTION=254 TIFFTAG_YRESOLUTION=254 TIFFTAG_RESOLUTIONUNIT=2 (pixels/inch) Image Structure Metadata: COMPRESSION=LZW INTERLEAVE=BAND Corner Coordinates: Upper Left ( 400000.000, 1300000.000) Lower Left ( 400000.000, 1200000.000) Upper Right ( 500000.000, 1300000.000) Lower Right ( 500000.000, 1200000.000) Center ( 450000.000, 1250000.000) Band 1 Block=256x256 Type=Byte, ColorInterp=Palette Color Table (RGB with 256 entries) _______________________________________________ osg-users mailing list [email protected] http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org _______________________________________________ osg-users mailing list [email protected] http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
