Re: [gdal-dev] getting height from Geotiff DEM

Usually DEM are not unsigned 8 bit but if you are asking for GDT_Byte, that is what you will get. You should change that RasterIO() parameter to GDT_Float32 for example. > Date: Sat, 6 Jun 2015 01:31:59 -0700 > From: jawaha...@hotmail.com > To: gdal-dev@lists.osgeo.org > Subject: [gdal-dev] get

Re: [gdal-dev] getting height from Geotiff DEM

Sorry, This was the correct answer but for the wrong user list 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 10:34, Nicolas Cadieux wrote: > > Hi, > > There is the " val

Re: [gdal-dev] getting height from Geotiff DEM

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 Télépho

[gdal-dev] getting height from Geotiff DEM

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(),