[Qgis-user] Qgis : Rounding all 228 bands of a float 64 bits raster?

[Andrea Giudiceandrea]

Hi Laurent Celati and list,
in order to apply the same math expression to all the cell values of all 
the bands of a multi-band raster layer, you can just use the GDAL 
"Raster Calculator" [1] processing algorithm in QGIS, provided that the 
"--allBands" [2] option is added as an "Additional command-line 
parameters" to the algorithm.

See my more detailed answer at https://gis.stackexchange.com/a/499651/107272

Regards.

Andrea

[1] 
https://docs.qgis.org/latest/en/docs/user_manual/processing_algs/gdal/rastermiscellaneous.html#gdalrastercalculator
[2] https://gdal.org/en/stable/programs/gdal_calc.html#cmdoption-allBands

> celati Laurent laurent.celati at gmail.com
> Sat Jan 10 03:59:37 PST 2026

> I work with qgis 3.4. I have a float 64 bits multi bands raster (228
> bands). 
> I would like to round / reduce the number of decimals for all bands (228
> bands).