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Hello,
I would like to know how I can change the settings of a layer without recreating it. Precisely what I want to do is to change the diameter of a diagram in an existing layer.
It is possible to modify settings in QGIS directly...Layer-->(right click)-->properties-->Diagrams
and then... (Display diagrams)-->(Pie chart)-->(size) in the layer directly. However, I want
to modify the settings in a plugin developed in Python.
Currently I am considering using the public member fonction readXML :
but without success. Is this the right place to look for information ?
Am I taking the right approach?
Any help would be appreciated.
I'm working with QGIS 2.8.2-Wien 64 bit
Regards
Pascal Lapointe
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