from qgis import core from qgis.utils import iface if iface.mapCanvas().mapRenderer().hasCrsTransformEnabled(): my_crs = core.QgsCoordinateReferenceSystem(4326,core.QgsCoordinateReferenceSystem.EpsgCrsId) iface.mapCanvas().mapRenderer().setDestinationCrs(my_crs)
import processing
from processing.core.Processing import Processing
processing.runalg(‘qgis:polygonstolines”)
error :algorithm not found
how t solve this problem