Hi, I'm trying to allow a user to set a relation from reference relation widget. I can't find a way to filter candidates by a spatial expression such map_canvas extent, or better by distance. Currently, I have to set the list to read only so that user can't display a dropdown list of thousands of features, which kills QGIS. User only have the choice to use the map pointer tool, or use "link it" plugin. I saw Alessandro's work for value relation filtering with form "value relation plugin" , which works great with a python function. The same feature for reference relation widget would be cool.
Dreaming of the perfect tool, I even think of these features: - display name on expression with the ability to compute distance between current object and candidate - display on the fly a curved arrow rubberband between selected relation and current feature, to have a visual feedback before saving (already in link it plugin) Is there anyone working on that area? Cheers Régis ----- ---------------------------------- Régis Haubourg GIS administrator and project manager Administrateur de données géographiques et chef de projet SIG Agence de l'eau Adour-Garonne -- View this message in context: http://osgeo-org.1560.x6.nabble.com/reference-relation-widget-filter-by-expressions-and-spatial-relations-tp5302113.html Sent from the Quantum GIS - Developer mailing list archive at Nabble.com. _______________________________________________ Qgis-developer mailing list [email protected] List info: http://lists.osgeo.org/mailman/listinfo/qgis-developer Unsubscribe: http://lists.osgeo.org/mailman/listinfo/qgis-developer
