[Qgis-user] QGIS/masks/clip

[Alexandre Neto]

Yes. I was about to suggest that. On the layer properties, in the
transparency tab, check what you have in the no data option.

Also, make sure that in the clip tool, the advanced options, for the no
data value, you don't use a value that is a valid value on the image.

Alexandre Neto
www.qcooperative.net

A Dom, 4/08/2019, 10:05, Luigi Pirelli <luipir at gmail.com> escreveu:

> Check no data value?
>
> On Saturday, 3 August 2019, Carolina Rey <carredy at hotmail.com> wrote:
>
>> Dear all,
>>
>> I have tried to work with masks with: *Raster > Extraction > Clip raster
>> by mask layer* but QGIS deteriorate
>> <https://de.pons.com/%C3%BCbersetzung/englisch-deutsch/deteriorate>s the
>> quality of the clipped raster to a high extend. Is it possible that the
>> algorithm has mistakes? Or is there something to change before applying
>> this function?
>>
>> Thank you very much
>> Carolina
>>
>>
>> <http://www.avg.com/email-signature?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail> Libre
>> de virus. www.avg.com
>> <http://www.avg.com/email-signature?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail>
>> <#m_-6134504061243602720_m_-4920135347430193923_m_-4805349840324663639_DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2>
>>
>
>
> --
>
> Luigi Pirelli
>
>
> **************************************************************************************************
> * LinkedIn: https://www.linkedin.com/in/luigipirelli
> * Stackexchange: http://gis.stackexchange.com/users/19667/luigi-pirelli
> * GitHub: https://github.com/luipir
> * Book: Mastering QGIS3 - 3rd Edition
> <https://www.packtpub.com/eu/application-development/mastering-geospatial-development-qgis-3x-third-edition>
> * Hire a team: http://www.qcooperative.net
>
> **************************************************************************************************
>
> _______________________________________________
> Qgis-user mailing list
> Qgis-user at lists.osgeo.org
> List info: https://lists.osgeo.org/mailman/listinfo/qgis-user
> Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.osgeo.org/pipermail/qgis-user/attachments/20190804/3a753492/attachment.html>