On Thu, Aug 23, 2012 at 8:15 AM, Marco Hugentobler <marco.hugentob...@sourcepole.ch> wrote: > Hi Radim > > Nodata should be rendered transparent in most cases. But it could also be > possible you want to render it differently. E.g. the interpolation plugin > writes nodata value in case it encounters numerical problems. Then it is > useful to have the nodata values coloured to see where problems happened.
There are other standard ways to highlight nodata: - set background color - set nodata pixels to a different value (r.null) and assign a color to it If you and other users insist that it should be possible to render nodata with a color, we have to add support for it in GUI (set color) and renderers. Currently there is no such support. Radim > Maybe there are other use cases as well. > > Regards, > Marco > > Am 22.08.2012 17:49, schrieb Radim Blazek: >> >> Hi, >> does anybody know why raster no data value is automatically added to >> transparency list in properties dialog? It makes no sense IMO. No data >> values are always rendered as transparent, no need to define them also >> in transparent list. >> >> Radim >> _______________________________________________ >> Qgis-developer mailing list >> Qgis-developer@lists.osgeo.org >> http://lists.osgeo.org/mailman/listinfo/qgis-developer > > > > -- > Dr. Marco Hugentobler > Sourcepole - Linux & Open Source Solutions > Weberstrasse 5, CH-8004 Zürich, Switzerland > marco.hugentob...@sourcepole.ch http://www.sourcepole.ch > Technical Advisor QGIS Project Steering Committee > > > _______________________________________________ > Qgis-developer mailing list > Qgis-developer@lists.osgeo.org > http://lists.osgeo.org/mailman/listinfo/qgis-developer _______________________________________________ Qgis-developer mailing list Qgis-developer@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-developer