Thanks for help so far. These suggestions seem to be more complicated than I require. I do not need to use the snapper to modify geometries in a custom tool, just to turn snapping on for the current layer when the user begins editing it. I tried the following, based on Etienne's inasafe example, but nothing happens:
layer = canvas.layer(0) point_locator = QgsPointLocator(layer) units = QgsTolerance.LayerUnits layer_config = QgsSnappingUtils.LayerConfig(layer, point_locator.Types(), 50, units) snapper = QgsSnappingUtils() snapper.setLayers([layer_config]) snapper.setSnapToMapMode(QgsSnappingUtils.SnapAdvanced) Is there another snapper already created by QGIS when editing begins that I can access? Cheers John John Stevenson Senior Developer [cid:image8bc20c.PNG@67520999.41b46f51]<http://www.thinkwhere.com> t: 01786 476060 (Office) t: 01786 476093 (Direct Dial) w:www.thinkwhere.com<http://www.thinkwhere.com> Glendevon House Castle Business Park Stirling FK9 4TZ [cid:image295644.PNG@b1051cba.4e97df2b]<https://twitter.com/thinkWhere1> [cid:imagea7a708.PNG@070b5c8d.4fa6e904] <http://www.linkedin.com/company/1509510?trk=companies_home_ycp_logo_forth-valley-gis> This email and its attachments are private and confidential. If you believe you have received this email in error, please contact the sender immediately on 01786 476060. If you are not the intended recipient, you may not rely on, use or disclose this email or any attachments in any way. thinkWhere Limited does not accept any liability for any damage that may be caused to the recipient's system or data by this email or any attachments. Please note that our email system may be subject to random monitoring by us. This Company accepts no liability for personal emails. thinkWhere is a limited company registered in Scotland with Registered Number SC315349 and having its Registered Office at Glendevon House, Castle Business Park, Stirling, FK9 4TZ. ________________________________ From: Qgis-developer [qgis-developer-boun...@lists.osgeo.org] on behalf of Thomas Gratier [osgeo.mailingl...@gmail.com] Sent: 21 January 2016 11:04 To: Tom Chadwin Cc: qgis-developer Subject: Re: [Qgis-developer] Setting snapping settings via Python Hi, I'm maybe wrong but you'd better look at QgsSnappingUtils http://qgis.org/api/classQgsSnappingUtils.html It seems more simple and should do the job for you. Cheers Thomas Gratier 2016-01-20 20:32 GMT+01:00 Tom Chadwin <tom.chad...@nnpa.org.uk<mailto:tom.chad...@nnpa.org.uk>>: This old thread might also help: http://osgeo-org.1560.x6.nabble.com/getting-QgsMapCanvasSnapper-to-work-td4147067.html -- View this message in context: http://osgeo-org.1560.x6.nabble.com/Setting-snapping-settings-via-Python-tp5246362p5246373.html Sent from the Quantum GIS - Developer mailing list archive at Nabble.com. _______________________________________________ Qgis-developer mailing list Qgis-developer@lists.osgeo.org<mailto:Qgis-developer@lists.osgeo.org> List info: http://lists.osgeo.org/mailman/listinfo/qgis-developer Unsubscribe: http://lists.osgeo.org/mailman/listinfo/qgis-developer
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