Hi Hilpers, 

Ok - so if I understand this correctly you want a on-the-fly clip, not a
mask. Right? 

A mask is only covering/hiding/selectively drawing geometry, but not
changing geometry. A clip is changing the geometry. See also
https://en.wikipedia.org/wiki/Mask_(computing) [1]vs.
http://pro.arcgis.com/en/pro-app/tool-reference/analysis/clip.htm  

A mask is typically just about drawing features not about manipulating
geometries as processing does. 

We need to use precise terms here. 

Andreas 

On 2017-03-08 21:08, hilpers wrote:

> Hello everyone,
> 
> I regularly face the issue that I want to set masks for layers of my choice
> based on one layer´s geometry.
> I know there is a plugin available which handles labels *but not* the
> geometry of layers to be masked.
> 
> In my oppinion a mask should make geometries / raster cells outside the
> specified mask disappear. The user should also be able to exclude layers
> from being masked. After searching for more than a year, I want to ask how
> you handle this pretty common scenario. Furthermore, four years after the
> last discussion about masks here on QGIS Nabble I also want to ask, whether
> developers are planning to incorporate this feature in V3. 
> 
> It would be great to have that masking capability option within the layer
> options or even the projects settings.
> 
> Thanks 
> 
> --
> View this message in context: 
> http://osgeo-org.1560.x6.nabble.com/Real-Mask-functionality-in-QGIS-tp5311464.html
> Sent from the QGIS - User mailing list archive at Nabble.com.
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Links:
------
[1] https://en.wikipedia.org/wiki/Mask_(computing)
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