qgis geojson


### geojson
```typefor vLayer in iface.mapCanvas().layers():  if type(vLayer) != QgsRasterLayer:    QgsVectorFileWriter.writeAsVectorFormat( vLayer, vLayer.name() + ".geojson", "utf-8", vLayer.crs(), "GeoJSON" )```

[geojson-merge](https://texonom.com/geojson-merge-02078b8ccfce437aa42441e3cb8075d3) 





