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I've got several rule-based layers in my project (qgis 2.18.13). Is it possible to check/uncheck the visibility of all rules (not the visibility of the layer itself) at once? If yes - is it possible to do this on all layers of the project at once too?

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  • Doesn't seem like it. It would be nice and intuitive if selecting all of the rules and then clicking any of the checkboxes toggled all of the selected ones.
    – Iamlukesky
    Nov 8, 2017 at 12:38

1 Answer 1

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You could use something like the following to check or uncheck all rule-based style categories from all layers loaded in your project:

from PyQt4.QtCore import Qt

for layer in QgsMapLayerRegistry.instance().mapLayers().values():
    renderer  = layer.rendererV2()
    if renderer.type() == 'RuleRenderer':
        ltl = QgsProject.instance().layerTreeRoot().findLayer(layer.id())
        ltm = iface.layerTreeView().model()
        legendNodes = ltm.layerLegendNodes(ltl)
        for ln in legendNodes:
            ln.setData(Qt.Unchecked, Qt.CheckStateRole)
            #ln.setData(Qt.Checked, Qt.CheckStateRole)

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