Message posté par : moinards ---------------------------------------- Anyway, I've found a solution. I think the problem was the path of the plugins. I changed it using sys.path.append. Here is an example of my working code : ----------------- Code : import sys from qgis.core import * # See https://gis.stackexchange.com/a/155852/4972 for details about the prefix QgsApplication.setPrefixPath('/usr', True) qgs = QgsApplication([], False) qgs.initQgis() # Append the path where processing plugin can be found sys.path.append('/usr/share/qgis/python/plugins/') from qgis import processing from processing.core.Processing import Processing Processing.initialize() layer1 = QgsVectorLayer('/home/moinards/Documents/bbox.shp', 'layer 1', 'ogr') layer2 = QgsVectorLayer('/home/moinards/Documents/foussais_polygones.shp', 'layer 2', 'ogr') results = {} outputs = {} feedback = QgsProcessingFeedback() params = { 'INPUT' : layer1, 'OVERLAY' : layer2, 'OUTPUT': QgsProcessing.TEMPORARY_OUTPUT } # See https://gis.stackexchange.com/a/276979/4972 for a list of algorithms outputs['Tampon'] = processing.run('qgis:union', params, feedback=feedback) params = { 'DISSOLVE': False, 'DISTANCE': 10, 'END_CAP_STYLE': 0, # Rond 'INPUT': outputs['Tampon']['OUTPUT'], 'JOIN_STYLE': 0, # Rond 'MITER_LIMIT': 2, 'OUTPUT': '/home/moinards/Documents/tampon3.shp', 'SEGMENTS': 5, } outputs['Tampon_2'] = processing.run('native:buffer', params, feedback=feedback) ----------------- ---------------------------------------- Le message est situé https://georezo.net/forum/viewtopic.php?pid=347795#p347795 Pour y répondre : qgis_fr(a)ml.georezo.net ou reply de votre messagerie Pour vous désabonner connectez-vous sur le forum puis Profil / Abonnement -- Association GeoRezo - le portail géomatique https://georezo.net