Hi Martin One option you could use is to install the MemoryLayerSaver plugin. That saves the data for all memory layers in a project into a file named after the project file.
Cheers Chris ________________________________________ From: Qgis-developer [[email protected]] On Behalf Of Martin Landa [[email protected]] Sent: 11 October 2016 05:59 To: qgis-dev Subject: [Qgis-developer] memory-based layers and projects Hi, I have plugin which creates memory based layer and loads data into this layer using its own reader. """ class MyLayer(QgsVectorLayer): def __init__(self, name): super(MyLayer, self).__init__('Point?crs=epsg:4326', name, 'memory') def load(self, reader): for f in reader: self._process_row(f) # add features to the map layer """ r The problem occures when user stores such layer in the project. Then the project file contains only: """ <datasource>memory?geometry=Point&crs=EPSG:4326&field=ader_microSvh:(0,0)...</datasource> """ So after loading the project, empty layer appears (with defined attributes), but with no points loaded. Is there any way how to define for such layer python code which would perform loading points using plugin reader when opening a project? Of course plugin could store (export) loaded data eg. into SQLite DB, but this is not the way I would like to go. Thanks in advance for any pointers, Martin -- Martin Landa http://geo.fsv.cvut.cz/gwiki/Landa http://gismentors.cz/mentors/landa _______________________________________________ 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 This message contains information, which may be in confidence and may be subject to legal privilege. If you are not the intended recipient, you must not peruse, use, disseminate, distribute or copy this message. If you have received this message in error, please notify us immediately (Phone 0800 665 463 or [email protected]) and destroy the original message. LINZ accepts no responsibility for changes to this email, or for any attachments, after its transmission from LINZ. Thank You. _______________________________________________ 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
