So now I'd like to set another expression, quite similar, but this time
the svg-path to a QgsSvgMarkerSymbolLayer.
Where can I find the name of that property? I found the
QgsLayoutObject.PictureSource here:
https://github.com/qgis/QGIS/blob/c89a542365eb46317468135cb33236ecc0c3768c/src/core/layout/qgslayoutobject.h#L47
But I don't know what class should hold the data defined property
enumeration for an svgMarkerSymbolLayer. Searching for "enum
DataDefinedProperty" in the qgis code doesn't get me any other result.
Hope anyone can help me out here!
Kind regards,
Raymond
On 22-08-18 08:39, Raymond Nijssen wrote:
Thank you Nyall! Does exactly what I need. Will add it to the python
cookbook.
Raymond
On 22-08-18 00:10, Nyall Dawson wrote:
On Wed, 22 Aug 2018 at 01:41, Raymond Nijssen <[email protected]>
wrote:
Hi devs!
I'd like my python plugin to set an expression for overriding a property
and I have no clue how to do so. I expect there must be some generic way
to set expressions.
Specifically, I want to set the expression for the "Image source" of a
QgsLayoutItemPicture to:
'/path/to/pictures/' || attribute(@atlas_feature, 'ID') || '.svg'
Try
property = QgsProperty.fromExpression( "'/path/to/pictures/' ||
attribute(@atlas_feature, 'ID') || '.svg'")
item.dataDefinedProperties().setProperty(QgsLayoutObject.PictureSource,
property)
Nyall
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