Re: [Qgis-user] Change Projection in Projection Properties from a Python PlugIn
On Thu, May 29, 2008 at 12:24 PM, bjsvwpfe [EMAIL PROTECTED] wrote: Hi, thanks for the answers. That was exactly what I'm searching for :jumping: So its possible for me to set the project settings now. But theres still a last little problem. I make the settings with the following code: srs = QgsSpatialRefSys() srs.createFromEpsg(21781) self.canvas = self.iface.getMapCanvas() self.canvas.setMapUnits(QGis.METERS) self.rect = self.canvas.extent() mapRender = self.canvas.mapRender() mapRender.setDestinationSrs(srs) mapRender.setProjectionsEnabled(1) self.canvas.refresh() But the project settings are not applied to the map. You still have to press the apply Button in the Project Settings. How can I solve this last problem so that it is not necessary to press the apply button. This should set the destination SRS to project settings: QgsProject.instance().writeEntry(SpatialRefSys,/ProjectSRSProj4String, proj4string) where proj4string is proj4 definition of the SRS and can be obtained from QgsSpatialRefSys Hope that helps Martin ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] Change Projection in Projection Properties from a Python PlugIn
On Thu, May 29, 2008 at 12:24 PM, bjsvwpfe [EMAIL PROTECTED] wrote: Hi, thanks for the answers. That was exactly what I'm searching for :jumping: So its possible for me to set the project settings now. But theres still a last little problem. I make the settings with the following code: srs = QgsSpatialRefSys() srs.createFromEpsg(21781) self.canvas = self.iface.getMapCanvas() self.canvas.setMapUnits(QGis.METERS) self.rect = self.canvas.extent() mapRender = self.canvas.mapRender() mapRender.setDestinationSrs(srs) mapRender.setProjectionsEnabled(1) self.canvas.refresh() But the project settings are not applied to the map. You still have to press the apply Button in the Project Settings. How can I solve this last problem so that it is not necessary to press the apply button. This should set the destination SRS to project settings: QgsProject.instance().writeEntry(SpatialRefSys,/ProjectSRSProj4String, proj4string) where proj4string is proj4 definition of the SRS and can be obtained from QgsSpatialRefSys Hope that helps Martin ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user Yes thats it. Thank you very much Martin :handshake: Greets Michael -- View this message in context: http://www.nabble.com/AW%3A-Change-Projection-in-Projection-Properties-from-a-Python-PlugIn-tp17516111p17534474.html Sent from the qgis-user mailing list archive at Nabble.com. ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
AW: [Qgis-user] Change Projection in Projection Properties from a Python PlugIn
Hi Michael this is what I bookmarked a few days ago (for the same reason): http://doc.qgis.org/classQgsMapRender.html - setDestinationSrs(...) regards Stefan -Ursprüngliche Nachricht- Von: Pfeiffer Michael Gesendet am: Mittwoch, 28. Mai 2008 17:37 An: qgis-user@lists.osgeo.org Betreff: [Qgis-user] Change Projection in Projection Properties from a Python PlugIn Hi everybody, is it possible to change the projection which is set in the Projection Properties from a Python-PlugIn. Within the PlugIn I want to load some layers into QGIS. To save the plugin users of changing projection properties I want to set the properties in the plugin. Maybe its possible with qgsProjectProperties? I didn't find a solution so far. To change the mapUnits in the plugin is possible with setUnits in the mapCanvas. But what about the projection? So any hint would be appreciated Thanks Greetings Michael -- View this message in context: http://www.nabble.com/Change-Projection-in-Projection-Properties-from-a- Python-PlugIn-tp17515568p17515568.html Sent from the qgis-user mailing list archive at Nabble.com. ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] Change Projection in Projection Properties from a Python PlugIn
On Wed, May 28, 2008 at 5:59 PM, Ziegler Stefan [EMAIL PROTECTED] wrote: Hi Michael this is what I bookmarked a few days ago (for the same reason): http://doc.qgis.org/classQgsMapRender.html - setDestinationSrs(...) Hi, yes, Stafan is right, you can access map canvas by plugin interface, access its QgsMapRender instance (by mapRender() function) and change the destination SRS with the function mentioned above. Good luck Martin ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] Change Projection in Projection Properties from a Python PlugIn
Martin, a quick question regarding this operation: If I were to setDestinationSrs, and on the fly projection was enabled, will this change be reflected on screen? I ask because I would like to be able to dynamically 're project' two vector layers on the fly during plugin operation, without the user dessesarily 'seeing' that this is happening, is this possible? Cheers, Carson Martin Dobias wrote: On Wed, May 28, 2008 at 5:59 PM, Ziegler Stefan [EMAIL PROTECTED] wrote: Hi Michael this is what I bookmarked a few days ago (for the same reason): http://doc.qgis.org/classQgsMapRender.html - setDestinationSrs(...) Hi, yes, Stafan is right, you can access map canvas by plugin interface, access its QgsMapRender instance (by mapRender() function) and change the destination SRS with the function mentioned above. Good luck Martin ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
