Le lundi 18 juillet 2011 18:01:08, Frank Warmerdam a écrit : > Zoltan, > > I haven't used it myself, but it looks like the XYZ driver might be > ready made for your need: > > http://www.gdal.org/frmt_xyz.html > > It looks like it is new in 1.8.
The XYZ driver doesn't fit Zoltan's requirements because it relies on the fact that coordinates are sorted and regularly spaced. So gdal_grid is the only option. With the help of a spread-sheet application or by any other adequate means, you should be able to transform your file into a CSV file and create a OGR VRT file that will be recognized as a valid OGR point datasource usable by gdal_grid. See the doc of the 2 drivers : http://gdal.org/ogr/drv_csv.html http://gdal.org/ogr/drv_vrt.html > > Best regards, > > On Mon, Jul 18, 2011 at 7:04 AM, Zoltan Szecsei <[email protected]> wrote: > > Hi, > > I have an ASCII file of DEM points that need to be converted into AAIG > > format, so I'm hoping gdal (_translate?) will do the trick > > I do not want to rely on the fact that my DEM is column/row ordered, nor > > that it is "exactly" 2m spaced. > > > > Is there some free-format ASCII that gdal can read, or does anyone know > > which of the formats read by GDAL won't need to be "ordered" or "exact". > > I'm hoping GDAL will take the pain out of ordering my DEM, and creating > > NODATA for missing cell values. > > > > My file looks like this: (Easting, Northing, height, type) > > > >> 570433.84 201262.28 73.65 MPoint > >> 570433.84 201260.28 73.72 MPoint > >> 570433.84 201258.28 73.79 MPoint > >> 570433.84 201256.28 73.86 MPoint > >> 570433.84 201254.28 73.89 MPoint > >> 570433.84 201252.28 74.02 MPoint > >> 570433.84 201250.28 74.16 MPoint > > > > Thanks in advance, > > Zoltan > > > > -- > > > > =========================================== > > Zoltan Szecsei PrGISc [PGP0031] > > Geograph (Pty) Ltd. > > P.O. Box 7, Muizenberg 7950, South Africa. > > > > 65 Main Road, Muizenberg 7945 > > Western Cape, South Africa. > > > > 34° 6'16.35"S 18°28'5.62"E > > > > Tel: +27-21-7884897 Mobile: +27-83-6004028 > > Fax: +27-86-6115323 www.geograph.co.za > > =========================================== > > > > _______________________________________________ > > gdal-dev mailing list > > [email protected] > > http://lists.osgeo.org/mailman/listinfo/gdal-dev _______________________________________________ gdal-dev mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/gdal-dev
