I wish to create a single contour line of height 4.54 m from a DEM layer. Any idea how I may do this please?
Just a couple of examples are:
- QGIS main menu
Raster | Extraction | Contour
- Processing Toolobox
SAGA | Vector <-> raster | Contour lines(or
SAGA | Vector to raster | Contour lines)
After setting your input file and output filename, turn the bottom window into "edit mode" by clicking on the pencil mark. Then add
-fl 4.54 in the command line. Click on [OK] button to run.
Just give your 4.54 (m) to both Minimum and Maximum Contour Value.