[Qgis-user] DataDefinedProperties

[Richard McDonnell]

Jonah,
I not sure if this is what you want, but in QGIS 2.14 you can set all of 
these using the Layer properties under Labels, it was in previous 
versions also.
I have used this previously to set label locations & rotation under 
Placement.
I noticed also that you can also specify Shadows, Scale Based Viability, 
Backgrounds etc.

In relation to placement and rotation, You create the fields for X, Y & 
Rotation, leaving them blank. Select layer properties and set the 
relevant fields from the drop down. Go back to the canvas, and while in 
edit mode use the label move and rotate options. once happy with 
everything, you can save it.
If you look at your table now, you will see that the X, Y & Rotation 
fields have been populated where you changed them.



On 12/04/2016 19:54, Jonah Crawford wrote:
> There's only a few examples using this class from the qgs python api
>
> http://qgis.org/api/classQgsPalLayerSettings.html
>
> Specifically:
>
> http://gis.stackexchange.com/questions/70111/how-to-obtain-rotation-field-name-defined-in-the-labels-data-defined-section-i
>
> http://gis.stackexchange.com/questions/77870/how-to-label-vector-features-programmatically/77963#77963
>
> It's not clear from the documentation how one would say set a color,
> or transparency, shadow etc.
>
> Could someone share some code examples ?
>
> Jonah
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-- 
*_Richard McDonnell_*
*GIS Specialist PgD GIS AssocSCSI*
*OPW FRM Data Management*
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