[QGIS-Developer] pyqgis labelling settings

[Hugh Kelley]

I finally found time to try this and it worked very well. Thank you!

one follow up question I have is that I can make the change visible by
running layer.triggerRepaint().

That does not refresh the values in the layer styling panel. I need select
a different layer and then select the original in order to see the changes
I've made in pyqgis. Is there a command that will refresh that pane?



On Sun, Oct 23, 2022 at 5:11 AM Francisco Puga <fpuga at icarto.es> wrote:

> This should work when working with SingleLabels
>
> layer = iface.activeLayer()
> settings = layer.labeling().settings()
> textFormat = settings.format()
> textFormat.setSize(20);
> settings.setFormat(textFormat)
> layer.labeling().setSettings(settings)
>
> hope it helps
>
> El vie, 21 oct 2022 a las 18:18, Hugh Kelley via QGIS-Developer
> (<qgis-developer at lists.osgeo.org>) escribió:
> >
> > Hi,
> >
> > I'm hoping to make some scripts for labelling layers.
> >
> > I've found the basic labelling settings in
> >
> >     layer =
> iface.activeLayer()layer.labeling().settings().format().size()
> >
> > for example, and it seems that I could be able to update that with an
> object like
> >
> >     newsize = QgsTextFormat()
> >     newsize.setSize(20)
> > but I haven't yet found the correct way to update the layer's value.
> >
> > it seems like it needs to be passed an entire new `QgsPalLayerSettings`
> object but I haven't found a way to build a complete object.
> >
> > I've seen `readFromLayer()` but I'm guessing that was a version 2 method
> that's no longer available in version 3.
> >
> > any pointers or a simple piece of code for updating a layer labelling
> property would be hugely appreciated.
> >
> > it also occurs to me to ask whether there is anything like:
> >
> >     print(layer.renderer().symbol().symbolLayers()[0].properties())
> >
> > that returns a dict of the layer symbology properties for a label.
> >
> > Another helpful thing would be code that imports a label definition from
> an exported xml file.
> >
> > thanks,
> >
> > hugh
> >
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>
>
> --
> Francisco Puga
> iCarto | Innovación, Cooperación, Cartografía y Territorio S.L.
> https://icarto.es
>
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-- 
Hugh Kelley
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