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How to create a layer tree group in QGIS?
Layer tree group node serves as a container for layers and further groups. Group names do not need to be unique within one tree nor within one parent. Append an existing node. Append a new group node with given name. Append a new layer node for given map layer.
How to create a layer group in Python?
Closed 2 years ago. How can I create a new group in the layer manager using python code? Using the new Layer tree (introduced since QGIS v.2.4 and available for QGIS v3.x) you can add a group to the QGIS ToC this way:
How to add a layer to a QGIS TOC?
Using the new Layer tree (introduced since QGIS v.2.4 and available for QGIS v3.x) you can add a group to the QGIS ToC this way: You can learn more on Layer tree handling here and here.
How to create a vector layer in QGIS?
In the code editor, or console, create a variable containing the path to your vector file. Now we’ll simultaneously assign the vector layer to the layer variable and load it into the QGIS interface. This adds the layer into the QGIS interface.
How to add layer to group in layers panel?
The code I am using is: groupName=”test group” root = QgsProject.instance ().layerTreeRoot () group = root.addGroup (groupName) group.insertChildNode (-1, QgsLayerTreeLayer (vectorLayer)) QgsMapLayerRegistry.instance ().addMapLayer (vectorLayer,True) My issue is that this code always adds two copies of the vector layer.
Do you need a unique name for a group in QGIS?
Group names do not need to be unique within one tree nor within one parent. Append an existing node. Append a new group node with given name. Append a new layer node for given map layer. Returns a clone of the group. Returns text representation of the tree.
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What do you call the legend widget in QGIS?
In the QGIS project we typically call this component the “legend widget”. People used to other GIS software may also use other names such as “table of contents (ToC)”. Layers in the legend widget can be organised into groups. This grouping allows easier manipulation of layers.
Is there a qgslegendinterface class in QGIS?
There is a QgsLegendInterface class (which can be obtained with iface.legendInterface ()) available for plugins. The legend interface has emerged in an ad-hoc way, leading to various issues when used in plugins. It is also worth noting that third-party applications based on QGIS have no access to the legend interface.