[Qgis-user] how to smooth pixel dtm raster

[Sebastian Gutwein]

Glad it worked out.
I think the search radius is in pixels not meters so 30 is probably more
than you need.

On Wed, Jan 20, 2021 at 5:14 PM Azzurra Lentini <azzurralentini at gmail.com>
wrote:

> Hi Sebastian thanks a lot.
> Yes it is what I was looking for!
> As the aster gdem is 30meter pixel resolution (square), I inserted: search
> mode square and search radius 30..
>
> Thanks Azzu
>
>
> On Wed, 20 Jan 2021 at 22:04, Sebastian Gutwein <bas at rdgland.com> wrote:
>
>> While I find it difficult to completely remove those artifacts I
>> usually use SAGA Gaussian Filter in QGIS to smooth rasters.
>> You will lose real edes and creases.
>>
>>
>> On Wed, Jan 20, 2021 at 3:17 PM Azzurra Lentini <azzurralentini at gmail.com>
>> wrote:
>>
>>> Hi list,
>>> I am using qgis 3.10 and 3.14.
>>>
>>> I downloaded a raster dtm nasa (AsterGdem Nasa pixel size 30) and I
>>> extracted  shade and slope. In these resulting files there are several
>>> lines E-W direction that I would like to hide (I think these lines are the
>>> result of the satellite survey). In Arcgis I do this operation with
>>> smoothing pixels, but I can’t find how to do the same in qgis.
>>>
>>> Thanks. A.L.
>>>
>>> --
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>
> --
> Lecturer GIS University "Roma Tre"
> Consultant Environmental Risk Prevention and Hydrogeology
> AZZURRA LENTINI
> ++++++++++++++++++++++++++
> Italy Mobile Tel.: **(39) 338 24 40 676
> ++++++++++++++++++++++++++
> SKYPE azzurrahydro
> ++++++++++++++++++++++++++
>
> *azzurralentini at gmail.com <azzurralentini at gmail.com>*
>
> *azzurra.lentini at uniroma3.it <azzurra.lentini at uniroma3.it> *
> ++++++++++++++++++++++++++
> *Par respect pour l'environnement,*
>
> *n'imprimez ce mail qu'en cas d'absolue nécessité*
>
>
>
>
>
>
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