Il 13/01/2014 09:12, Bernhard Ströbl ha scritto: > it depends... > Processing works as follows: take input layer(s) - do a process - create > output layer > So if the "process" is a selection the result is an output layer with only the > selected features included. > Therefore for "eliminate" I included a simple logical selection based on a > field in > the layer. Thus to use eliminate in a model you first have to create an input > layer > with a field that somehow marks all features to be eliminated (e.g. caluclate > area/perimeter). Currently I do not know how this can be achieved. :-( > Any hints welcome.
IMHO the approach should be different: eliminating features a posteriori is always feasible, but very inefficient, and it does not solve the "mouse tail" problem: a valid feature is created, but attached to it hangs a close-to-zero-area that results from different approximation of coordinate values. This may seem a corner case, but is indeed preventing effective analyses in real cases. All the best. -- Paolo Cavallini - www.faunalia.eu Corsi QGIS e PostGIS: http://www.faunalia.eu/training.html _______________________________________________ Qgis-developer mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/qgis-developer
