Getting rid of cells of 0 values in raster using QGIS?

Question

I have a DEM like below image. The black area shows 0-values.

I want to remove cells of 0-values in the raster.

In raster calculator, I wrote con("demclip_re@1">0,"demclip_re@1") but it gives "Incorrect expression".

What is wrong with my expression?

Joseph · Answer

Con is an ArcGIS raster tool which is not available in QGIS.

If you want to replace all 0 value cells with nodata, you could use something like:

("demclip_re@1") / ("demclip_re@1">0)

Flavio H. Campos · Answer

I've tested the ("demclip_re@1") / ("demclip_re@1">0) and it worked almost perfectly. The only problem in my case was that it also excluded negative values and I wanted only 0 values excluded. Therefore, the best solution for me was:
("demclip_re@1") / ("demclip_re@1" != 0)

Getting rid of cells of 0 values in raster using QGIS?

2 Answers

Add your own answers!

Ask a Question