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<p><span style="font-size: 12pt;">Hello,</span></p>
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<p><span style="font-size: 12pt;">I would like to know how I can change the settings of a layer </span><span style="font-size: 12pt;">without recreating it</span><span style="font-size: 12pt;">.</span></p>
<div>Precisely what I want to do is to change the diameter of a diagram in an existing layer.<br>
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<div>It is possible to modify settings in QGIS directly...Layer-->(right click)-->properties-->Diagrams</div>
<div>and then... (Display diagrams)-->(Pie chart)-->(size) in the layer directly. However, I want<br>
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<div>to modify the settings in a plugin developed in Python. <br>
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<div>Currently I am considering using the public member fonction readXML :<br>
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<div><a href="http://qgis.org/api/2.8/classQgsDiagramSettings.html">http://qgis.org/api/2.8/classQgsDiagramSettings.html</a><br>
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<div>but without success. Is this the right place to look for information ?<br>
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<div>Am I taking the right approach?<br>
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<div>Any help would be appreciated.<br>
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<div>I'm working with QGIS <span style="font-size: 12pt;">2.8.2-Wien 64 bit</span></div>
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<div><span style="font-size: 12pt;">Regards</span></div>
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<div>Pascal Lapointe<br>
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