How do you apply a QgsExpression to a Label ?
I can do it in QGIS with this simple expression concat('N:' ,round(Value,0),'\n','Yield:' ,round(Value 2,0))
N: 65
Yield: 40
How do I do it in PyQGIS ? I see a getLabelExpression but no setLabelExpression
This works but I want but only for the field name
crap = QgsVectorLayer("D:/data.shp", "data", "ogr")
QgsMapLayerRegistry.instance().addMapLayer(crap)
palyr = QgsPalLayerSettings()
palyr.readFromLayer(crap)
palyr.enabled = True
palyr.fieldName = 'Name'
palyr.placement= QgsPalLayerSettings.OverPoint
palyr.setDataDefinedProperty(QgsPalLayerSettings.Size,True,True,'8','')
palyr.writeToLayer(crap)