[Qgis-user] raster smoothing tool?

[Yann Troutet]

Merci Nicolas,

I had tried the Vigra Smoothing tool from SAGA, but this simply raises
the following error message:

The following layers were not correctly
generated.<ul><li>C:/Users/ytroutet/AppData/Local/Temp/processing_f62d6fcc634e4d53945b3b999d33eb65/fabcc06c819f4f7684ec3ba0a75d6a0d/OUTPUT.sdat</li></ul>You
can check the 'Log Messages Panel' in QGIS main window to find more
information about the execution of the algorithm.

I'm using QGIS 3.4.4. Madeira and have mostly been attempting to run
r.resamp.filter kernel filters. This process just outputs a new raster
layer with the same pixels values, even though I've tried different
'radius' values.

I've just looked at the SAGA simple filter, and this worked just fine.

Une fois de plus merci de m'avoir suggéré les options du côté de SAGA.

yann
>>> Nicolas Cadieux <nicolas.cadieux at archeotec.ca> 3/22/2019 6:26 PM
>>>
Hi,

That is weird.  There are low pass filter in processing.  Try one from
Saga.  Then open Saga and try again.  Compare both.  If you get the same
results, you will know the problem is from Saga or the raster but not
from QGIS.  Then write back with the exact version of QGIS you are
using, on what platform (OS, Linux, Windows...) and what algorithm you
are trying. This should help us figure things out.

Nicolas

Le 22 mars 2019 à 20:27, Yann Troutet <ytroutet at selkirk.ca> a écrit :



Hello,

Are there any raster smoothing (low-pass filtering) tools that will
work in QGIS 3.  Every option that I try simply outputs a raster that
has the exact same values as the original.


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