How to modify current QGIS canvas from python script?

Asked Jan 20 '15 at 10:02

Active Jan 20 '15 at 12:57

Viewed 212 times

I want to zoom into the current active QGIS canvas from a standalone python script.

I tried the following but it doesn't impact the current QGIS canvas:

import qgis.utils
canvas = qgis.utils.iface.mapCanvas()
canvas.zoomIn()

Can I modify the QGIS app from a standalone python script (not from the QGIS Python console)? If so, how do I do that?

edited Jan 20 '15 at 12:57

asked Jan 20 '15 at 10:02

ustroetz

Purely a guess but perhaps try using from qgis.gui import QgsMapCanvas? – Joseph Jan 20 '15 at 11:21
Doesn't do anything either. – ustroetz Jan 20 '15 at 12:32
what kind of standalone script? Something that inside a QGIS session? – Nathan W Jan 20 '15 at 12:53
I have a running QGIS session and independently from that a Python script (not the Python console). – ustroetz Jan 20 '15 at 12:56
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Very similar question: http://gis.stackexchange.com/questions/77797/accessing-existing-instance-of-qgis-from-stand-alone-python-script?rq=1 – Germán Carrillo Jan 24 '15 at 04:14

0 Answers0