[Qgis_fr] QGIS: calcul emprise d un polygone + polyligne

Message posté par : laurent00 ---------------------------------------- j'ai cette formule qui me permet de calculer l'aire globale de cette emprise depuis la première couche mais comment créer l'emprise elle même ? ----------------- Citation : area( make_polygon( make_line( make_point( if((x_min( geometry( get_feature('tourettes', 'trt_id', attribute ($currentfeature, 'maa_id' )) ) ))< x_min( $geometry), (x_min( geometry( get_feature('tourettes', 'trt_id', attribute ($currentfeature, 'maa_id' )) ) )), x_min( $geometry)), if((y_min( geometry( get_feature('tourettes', 'trt_id', attribute ($currentfeature, 'maa_id' )) ) ))< y_min( $geometry), (y_min( geometry( get_feature('tourettes', 'trt_id', attribute ($currentfeature, 'maa_id' )) ) )), y_min( $geometry)) ), make_point( if((x_min( geometry( get_feature('tourettes', 'trt_id', attribute ($currentfeature, 'maa_id' )) ) ))< x_min( $geometry), (x_min( geometry( get_feature('tourettes', 'trt_id', attribute ($currentfeature, 'maa_id' )) ) )), x_min( $geometry)), if((y_max( geometry( get_feature('tourettes', 'trt_id', attribute ($currentfeature, 'maa_id' )) ) ))> y_max( $geometry), (y_max( geometry( get_feature('tourettes', 'trt_id', attribute ($currentfeature, 'maa_id' )) ) )), y_max( $geometry)) ), make_point( if((x_max( geometry( get_feature('tourettes', 'trt_id', attribute ($currentfeature, 'maa_id' )) ) ))> x_max( $geometry), (x_max( geometry( get_feature('tourettes', 'trt_id', attribute ($currentfeature, 'maa_id' )) ) )), x_max( $geometry)), if((y_max( geometry( get_feature('tourettes', 'trt_id', attribute ($currentfeature, 'maa_id' )) ) ))> y_max( $geometry), (y_max( geometry( get_feature('tourettes', 'trt_id', attribute ($currentfeature, 'maa_id' )) ) )), y_max( $geometry)) ), make_point( if((x_max( geometry( get_feature('tourettes', 'trt_id', attribute ($currentfeature, 'maa_id' )) ) ))> x_max( $geometry), (x_max( geometry( get_feature('tourettes', 'trt_id', attribute ($currentfeature, 'maa_id' )) ) )), x_max( $geometry)), if((y_min( geometry( get_feature('tourettes', 'trt_id', attribute ($currentfeature, 'maa_id' )) ) ))< y_min( $geometry), (y_min( geometry( get_feature('tourettes', 'trt_id', attribute ($currentfeature, 'maa_id' )) ) )), y_min( $geometry)) ), make_point( if((x_min( geometry( get_feature('tourettes', 'trt_id', attribute ($currentfeature, 'maa_id' )) ) ))< x_min( $geometry), (x_min( geometry( get_feature('tourettes', 'trt_id', attribute ($currentfeature, 'maa_id' )) ) )), x_min( $geometry)), if((y_min( geometry( get_feature('tourettes', 'trt_id', attribute ($currentfeature, 'maa_id' )) ) ))< y_min( $geometry), (y_min( geometry( get_feature('tourettes', 'trt_id', attribute ($currentfeature, 'maa_id' )) ) )), y_min( $geometry)) ) ) ) ) ----------------- ---------------------------------------- Le message est situé https://georezo.net/forum/viewtopic.php?pid=366302#p366302 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