[QGIS-Developer] Remove all rubberbands from the canvas

Tim Sutton tim at kartoza.com
Tue Sep 22 02:19:58 PDT 2020


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 <
paul.wittle at dorsetcouncil.gov.uk> 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,
>
>
>
> *Paul Wittle *
>
> <https://www.dorsetcouncil.gov.uk/>
>
> *Business Solutions Analyst (GIS)*
>
> *ICT Operations *
>
> *Dorset Council*
>
> 01305 228473
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>
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Tim Sutton
Visit http://kartoza.com to find out about open source:
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Tim is a member of the QGIS Project Steering Committee
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