10
votes
Make the pixel values of the DEM correspond to the actual heights
I had a similar SE-GIS question several years ago. The answer: by default, QGIS displays an estimate of the min/max values, which results in the unexpected values. To see this, open up the Min/Max ...
- 7,759
6
votes
Accepted
Create vector out of a DEM in QGIS
Instead of contour lines, create contour polygons: Menu Processing > Toolbox > Contour Polygons(see QGIS documentation).
It is a tool provided by GDAL library, needs GDAL 2.4.0 or higher (should ...
- 61.4k
4
votes
Converting 5m DTM Raster to 0.5 m resolution in QGIS
Resampling 5 m pixels into 0.5 m pixel size is waste of disk space but it may be necessary. However, with QGIS it should be possible to use the GDAL virtual format (VRT) without resampling. See the ...
- 60.5k
4
votes
Converting 5m DTM Raster to 0.5 m resolution in QGIS
The Warp (Reproject) tool will resample for you.
You need to set the Output file resolution to 0.5 in your case, and also pick an appropriate Resampling method:
- 1,730
2
votes
How to make use of a 3 band DEM for analysis?
From your screenshot, the answer is simple: you don't have a DEM. A DEM (digital elevation model) is a (most often singleband) raster where pixel values correspond to elevation. In your case, however,...
- 61.4k
2
votes
Converting 5m DTM Raster to 0.5 m resolution in QGIS
You can use Resampling tool from SAGA. In the field of cellsize you put the wanted output resolution (0.5m), in the Grids field you put the raster file you want to resample.
Then you can use either ...
- 150
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