id summary reporter owner description type status priority milestone component version resolution keywords cc cpu platform 2550 Polygons disappear after v.generalize simplification dido grass-dev@… "Polygons disappear after v.generalize simplification. A large rectangular polygon dataset is used with ~14 000 features. Polygons are first processed with rmarea to remove all polygons of size 900 m2. Then a simplification is executed with v.generalize using a factor of 10, all other parameters defaulted. After simplification several large polygons are missing from the set rendering it useless. System is a win7x64; QGIS 2.6.1 and GRASS 6.4.4 Dataset can be provided upon request (being a 7.5mb shapefile). " defect new major 6.4.6 Vector 6.4.4 Polygons disappear v.generalize simplification x86-64 MSWindows 7