Hi Arnaud, thanks for your answer. This algorithm could be very useful and it should add the neighborhood condition: I will wait for trying it, thanks!
Marco 2017-02-28 10:43 GMT+01:00 Arnaud Morvan <[email protected]>: > Hello Marco, > > Note that I'm currently working on a new Algorithm that supersede dissolve > tool. > > Here is how it should look like : > > Name : "Aggregate" > > Parameters : > > * input vector layer > > * group_by expression (field name or complex expression, possible to > add conditions on geometry predicates) > > * geometry aggregator : collect (multipart) or combine/union (single > part) > > * Fields aggregators, for each field : > > aggregate function, input field, delimiter (for the concatenate > aggregator) > > output filed definition (type, length, precision) > > with possibility to add/remove output fields, import the fields > from an existing layer > > The UI should looks like the Refactor Fields algorithm. > > With this it should be possible to set a neighborhood condition in the > group_by expression. > > Cheers > > Arnaud > > Le 22/02/2017 à 10:32, Marco Grisolia a écrit : > > Hi, > I recently answered to a question on GIS StackExchange [0]. In this > question, the asker was looking for a way for dissolving features using an > adjacency criterion instead of using common attribute field (please, follow > the link below for a better understanding). This feature is already > available in the analogous ArcGIS tool when the"Create multipart features" > option is enabled and I think it could be of interest having an additional > option like this in the "Dissolve" tool main dialog for next releases. > I never submitted a feature request on the QGIS Project site but, since > there is already a (very rough) code and a general idea on how to approach > the issue, I didn't know if this was the case of adding it there. > Otherwise, let me know if I need to add it on the QGIS Project site (if > this is the case, I'm sorry for wasting your time). > Regards, > Marco > > > [0] http://gis.stackexchange.com/questions/228267/merging- > adjacent-lines-in-qgis > > > _______________________________________________ > Qgis-developer mailing [email protected] > List info: https://lists.osgeo.org/mailman/listinfo/qgis-developer > Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-developer > > > > _______________________________________________ > Qgis-developer mailing list > [email protected] > List info: https://lists.osgeo.org/mailman/listinfo/qgis-developer > Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-developer >
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