Hi Paolo Because there is no unary minus in the raster calc grammar yet (%left UMINUS // fictitious symbol (for unary minus) ).
As a workaround, (diff@1)* (0-1) should be ok. Please fill a bug. Regards, Marco Am Mittwoch, 16. März 2011, um 14.21:10 schrieb Paolo Cavallini: > Hi all. > Why are these expressions invalid? > > (diff@1)*-1 > (diff@1)*(-1) > > All the best. -- Dr. Marco Hugentobler Sourcepole - Linux & Open Source Solutions Churerstrasse 22, CH-8808 Pfäffikon SZ, Switzerland [email protected] http://www.sourcepole.ch Technical Advisor QGIS Project Steering Committee _______________________________________________ Qgis-developer mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/qgis-developer
