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I am trying to create a Meshlayer in memory and tried this simple test in QGIS 3.6:
from qgis.core import QgsProject,QgsMeshLayer
proj = QgsProject.instance()
uri="1.0, 2.0 \n2.0, 2.0 \n3.0, 2.0 \n2.0, 3.0 \n1.0, 3.0 \n---0, 1, 3, 4 \n1, 2, 3 \n"
outLayer = QgsMeshLayer( uri, 'test', "memory_mesh")
proj.addMapLayer(outLayer)
Apparently dataprovider has no attribute name and QGIS crashes.
Is there something that I am doing wrong? What shoulb be the format of URI, a simple string?
This is a mistake in the documentation. It needs to be mesh_memory and not memory_mesh. Also the documentation is missing one \.
So in QGIS 3.12 it works perfectly:
uri="1.0, 2.0 \n" \
"2.0, 2.0 \n" \
"3.0, 2.0 \n" \
"2.0, 3.0 \n" \
"1.0, 3.0 \n" \
"---" \
"0, 1, 3, 4 \n" \
"1, 2, 3 \n"
scratchLayer = QgsMeshLayer(uri, "My Scratch layer", "mesh_memory")
QgsProject.instance().addMapLayers([scratchLayer])
