I use a DEM file (*.tif) and a points layer. My need is basic : getting the Z value for each point by extracting them from the DEM. Both layers correctly opened with QGIS 2.6. The DEM returns a Z value if I click with the « i » button (informations).
'Point Sampling Tool' plugin is set as below :
- Layer containing sampling points : my points layer
- Layers with fields/bands to get values from : I select my DEM, which appears in the list as : 'EUD_CP_DEMS_3500015000-AA-86 : Band 1 (raster)'
- Output point vector layer : output.shp
- Add created layer to the TOC : activated
The following message in still issued in the 'Status' part :
Complete the input fields and press OK...
I don't undertand what to do with this message. Anyway, I validate the dialog and get my output.shp added to the TOC properly... BUT the attributes column is empty (NULL values). I have the right number of lines matching the number of points in my source points layer.
I can't find any further help on the Web. Such clear tutorials do not show any difficulties.
Is my DEM format a possible issue?