[Qgis-user] DEM to contours

Karlo no Dabas maajas karlo at latnet.lv
Thu Jan 15 07:44:43 PST 2026


Hi!

I have used “gdal_contour” for deriving contours.

https://gdal.org/en/stable/programs/gdal_contour.html

The QGIS interface for this tool is quite incomplete. If you are afraid 
of terminal window, then the “Additional command line parameters” should 
be specified.


Best regards,
Kārlis

.P.S. Sooner or later You should learn to use scripts as QGIS is not 
designed for raster analises :)


15.01.26 15:59, Riaan Botes via QGIS-User rakstīja:
> QGIS Desktop 3.44.4 (Qt6)
> 
> I am trying to get a contour(s) line(s) derived from a DEM. I am using 
> the Raster Extractor (from Raster Processing Tool).
> 
> The problem with this tool is that it does not appear to have a MIN/MAX 
> function. So it get over 1.5 million line segments.
> 
> Is there a way to define the contour OR is there another tool I can use?
> 
> Riaan
> 
> 
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