Hi Mariana, You might have in invalid geometry. One of your polygon have a selfintersection.
Try to control your polygons with the topologychecker. Vector>Topologychecker>Configure Choose the layer >Choose ‘Must not have invalid geometries’ Click Add Rule Click Show Errors Click Validate All https://www.youtube.com/watch?v=_GK2ll_TcQo Regards Lene Fischer Fra: Qgis-user [mailto:[email protected]] På vegne af Mariana Buzzi Sendt: 19. januar 2016 04:29 Til: Ramon Andiñach Cc: [email protected] Emne: Re: [Qgis-user] Problems with clipper and snappin options Hi Ramon! I check to the CRS and this is right!i can't use the clip option,may be is because I did the mask with the option raster to vectorial. I don't know!!!!what can I do? I can do the advance digital!!!! Thanks so much!!!! Regards Mariana El 18/01/2016 03:44, "Ramon Andiñach" <[email protected]<mailto:[email protected]>> escribió: Hi, I think the listsever has (deliberately) dropped your images. Two suggestions: 1. Can you check and make sure that both your layers have the same CRS? If they aren't your first move should be to save one of the layers so they have the same CRS. 2. On the snapping settings, change the snapping mode to "Advanced" (Avanzado?). This allows you to set options for individual layers. Hope this helps. -ramon. > On 18 Jan 2016, at 13:17, Mariana Buzzi > <[email protected]<mailto:[email protected]>> wrote: > > Good night people! > I'm making masks that correspond to landscape units (LU). The polygon > corresponds to the LU called pampas. This polygon was done through the > creation of a vector and scanned with mouse function of landscape features > shape. As you can see, my first problem emerges at that I can not cut the > pampa (light blue) with clipper program. > The second problem arises with me snnapping options. I need to do two > polygons .. rudimentary scanning did not want to, but I wanted to use the > snapping options so that the edges are accurate. But I could not. > > I hope you can help me. > Thank you. > A big hello from Patagonia. > Mariana > _______________________________________________ > Qgis-user mailing list > [email protected]<mailto:[email protected]> > List info: http://lists.osgeo.org/mailman/listinfo/qgis-user > Unsubscribe: http://lists.osgeo.org/mailman/listinfo/qgis-user _______________________________________________ Qgis-user mailing list [email protected]<mailto:[email protected]> List info: http://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: http://lists.osgeo.org/mailman/listinfo/qgis-user
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