PyQGIS 3 Set Svg marker symbol

Question

I would like to add my own SVG symbol instead of a dot. I tried the following.

layer = iface.activeLayer()
QgsProject.instance().addMapLayer(layer)
svgStyle = {}
svgStyle['fill'] = '#0000ff'
svgStyle['name'] = path
svgStyle['outline'] = '#000000'
svgStyle['outline-width'] = '6.8'
svgStyle['size'] = '6'
symbol = QgsSvgMarkerSymbolLayer.create(svgStyle)
layer.renderer().setSymbol(symbol)

Unfortunately the following error occurs:

TypeError: QgsSingleSymbolRenderer.setSymbol(): argument 1 has unexpected type 'QgsSvgMarkerSymbolLayer'

Answer 1

QgsSingleSymbolRenderer.setSymbol() need a QgsSymbol object not QgsSvgMarkerSymbolLayer.

To set the symbol you can use this, where we are changing the default style (0).

symbol = QgsSvgMarkerSymbolLayer(path)
symbol.setSize(6)
symbol.setFillColor(QColor('#0000ff'))
symbol.setStrokeColor(QColor('#ff0000'))
symbol.setStrokeWidth(1)
layer.renderer().symbol().changeSymbolLayer(0, symbol )