[Qgis-user] Adding QgsLayoutItemPolyline to the print layout legend

[Asim al-sofi]

Hi all
Iam trying to add legend to the print layout of a polyline that have been
created using QgsLayoutItemPolyline.
I managed to draw the polyline on the map composer and play with its
properties, but could not add the corresponding line to the legend.
Any ideas/suggestions?
The code that corresponds to the legend is:

polygon2 = QPolygonF()
polygon2.append(QPointF(50.0, 150.0))
polygon2.append(QPointF(150.0, 80.0))
polygon2.append(QPointF(250.0, 100.0))
polygon2.append(QPointF(10.0, 200.0))
layoutItemPolyline = QgsLayoutItemPolyline(polygon2, layout)
layout.addLayoutItem(layoutItemPolyline)

props = {}
props["color"] = "green"
props["style"] = "solid"

symbol = QgsLineSymbol.createSimple(props)
layoutItemPolyline.setSymbol(symbol)
legend = QgsLayoutItemLegend(layout)
legend.setAutoUpdateModel(False)
root = legend.model().rootGroup()
legend = QgsLayoutItemLegend(layout)
legend.setTitle("Legend")
legend.setAutoUpdateModel(False)
legend.setLinkedMap(map)
legend.setLegendFilterByMapEnabled(True)
layout.addLayoutItem(legend)
legend.attemptMove(QgsLayoutPoint(235, 36, QgsUnitTypes.LayoutMillimeters))


Thanks in advance
Kind regards,
Asim
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