Hi Tim, Thanks for getting back to me. That is a shame because I've already got various versions of what you suggest in my script so I guess I will just have to keep looking for the line that is wrong.
The reason I'm struggling is because I'm using it for drawing polygons and all the examples I find seem to be for rectangles or points. Is there a polygon example anywhere? It does seem slightly odd that rubber bands can't be removed once the script has lost references to them though. The only way seems to be to close and reopen QGIS but I'm surprised there is not a clear method on canvas(). Thanks, Paul --- Hi Paul AFAIK you need to keep track of all the rubber bands you add and then reset them when you want to clean them up. See some example code here: https://github.com/inasafe/inasafe/blob/develop/safe/gui/tools/rectangle_map_tool.py#L56 Regards Tim On Tue, Sep 22, 2020 at 9:02 AM Paul Wittle < [email protected]> wrote: > Hi, > > > > I’m having an issue with the documentation this morning. I’m writing a > small python plugin and adding rubberbands to the canvas which is fine > but for some reason I can’t seem to remove them from the canvas at the end. > > > > To start with, this is because I’d not put anything in to remove them > but now I’m using the iface.mapCanvas.scene().removeItem() function > and they still are present. > > > > I have two questions really: > > 1. I can’t see scene defined in the documentation for QgsMapCanvas; is > this something that should be there? > 2. Is there a way to simply remove all scenes from the canvas? > > > > Any help would be great 😊 > > Thanks, > > This e-mail and any files transmitted with it are intended solely for the use of the individual or entity to whom they are addressed. It may contain unclassified but sensitive or protectively marked material and should be handled accordingly. Unless you are the named addressee (or authorised to receive it for the addressee) you may not copy or use it, or disclose it to anyone else. If you have received this transmission in error please notify the sender immediately. All traffic may be subject to recording and/or monitoring in accordance with relevant legislation. Any views expressed in this message are those of the individual sender, except where the sender specifies and with authority, states them to be the views of Dorset Council. Dorset Council does not accept service of documents by fax or other electronic means. Virus checking: Whilst all reasonable steps have been taken to ensure that this electronic communication and its attachments whether encoded, encrypted or otherwise supplied are free from computer viruses, Dorset Council accepts no liability in respect of any loss, cost, damage or expense suffered as a result of accessing this message or any of its attachments. For information on how Dorset Council processes your information, please see www.dorsetcouncil.gov.uk/416433 _______________________________________________ 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
