3

My goal is to define labels programmatically for the case similar for the figure below:

labelling layer manually using QGIS UI

But I didn't find any guidance how to do so using Python.

I have a feeling it could be done using QgsLabel but didn't find any working exmaple how to do so.

I seek some example how to do so;

If I'm wrong with QgsLabel idea, can you explain briefly the right approach for this?

As usual some code example could be very useful.

5

Activate your layer in the ToC and try this in the QGIS Python console:

layer = iface.activeLayer()
layer.setCustomProperty("labeling", "pal")
layer.setCustomProperty("labeling/enabled", "true")
layer.setCustomProperty("labeling/fontFamily", "Arial")
layer.setCustomProperty("labeling/fontSize", "10")
layer.setCustomProperty("labeling/fieldName", "ename")
layer.setCustomProperty("labeling/placement", "2")
iface.mapCanvas().refresh()

An alternate way would be to use QgsPalLayerSettings(), like in MultiLine field-name label referencing, however, it didn't work for me in QGIS v.2.8.

By the way, next time try this kind of search.

  • this is a great update on labeling conjecture. Been unable to use the palLayersettings since the 2.8 update. Is there documentation for the new programmatic application? – Katalpa Mar 2 '15 at 14:35
  • @Katalpa Not that I'm aware of. – Germán Carrillo Mar 2 '15 at 22:18

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