Hi, There is the " value tool plugin" that you can install. That will give you the values when you move your mouse across the raster. For more points, install the "point sampling tool" plugin.
Nicolas Cadieux M.Sc. Les Entreprises Archéotec inc. 8548, rue Saint-Denis Montréal H2P 2H2 Téléphone: 514.381.5112 Fax: 514.381.4995 www.archeotec.ca On Jun 6, 2015 4:31 AM, djawahar <jawaha...@hotmail.com> wrote: > > Hi, > I have a geotiff dem. How can I get the height information given a pixel > coordinate? I tried to get the data using > gdErr = poDataset->GetRasterBand(1)->RasterIO( > GF_Read, 0, 0, poDataset->GetRasterXSize(), poDataset->GetRasterYSize(), > pBits, bmi.Header.biWidth, bmi.Header.biHeight, GDT_Byte, > 1, nScanSize); > > but the data is either 0 or 255. > > What is the right way to do this? > > Thanks & regards, > > D. Jawahar > > > > -- > View this message in context: > http://osgeo-org.1560.x6.nabble.com/getting-height-from-Geotiff-DEM-tp5209506.html > > Sent from the GDAL - Dev mailing list archive at Nabble.com. > _______________________________________________ > 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
