6

I need get the label text for each feature in a points layer. I can read feature attribute using:

layer = QgsProject.instance().mapLayersByName('layer_name')[0]
features = layer.getFeatures(QgsFeatureRequest())
for f in features:
    attribute=f.['field_name']

but I need the label text (result of a expresion), it's diferent from attribute.

1
  • U mean u're labeling with an expression ?
    – Snaileater
    Jun 6, 2019 at 12:44

1 Answer 1

7

You can get the label text for each feature this way in QGIS 3:

layer = iface.activeLayer()

if layer.labelsEnabled():
    labeling = layer.labeling()
    palyr = labeling.settings()
    expression = QgsExpression(palyr.fieldName)

    context = QgsExpressionContext()
    for feature in layer.getFeatures():
        context.setFeature(feature)
        expression.prepare(context)
        value = expression.evaluate(context)
        print(expression.formatPreviewString(value, True))

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