Feature request #12984
raster calculator conditional statement
| Status: | Closed | ||
|---|---|---|---|
| Priority: | Normal | ||
| Assignee: |  Victor Olaya | ||
| Category: | Processing/QGIS | ||
| Pull Request or Patch supplied: | No | Resolution: | duplicate |
| Easy fix?: | No | Copied to github as #: | 21062 |
Description
It would be possible to implement a conditional statement like in SAGA grid calculator
to allow an easier setting of no data to a value? e.g. 0?
In SAGA
ifelse(gt(raster1, 0), raster1, 0)
means:
if raster1 is gt (greater than) 0, then keep raster 1, else give the pixels value of 0
In GRASS in r.calc it is possible to run
if(isnull(raster1),0,raster1)
but the original (not null) data strangely are different and i cannot understand what happens. The formula of Grass is the same one of the tool called fill nodata.
In QGIS, for raster calculator, i saw example like
(raster1 >190) * raster1
which in reality create a mask.
Is there any conditional statement in QGIS?
History
#1
Updated by Nyall Dawson almost 9 years ago
- Resolution set to duplicate
- Status changed from Open to Closed
Duplicate of #4476