{"id":10557,"date":"2023-06-06T10:30:00","date_gmt":"2023-06-06T08:30:00","guid":{"rendered":"https:\/\/www.sigterritoires.fr\/?p=10557"},"modified":"2023-06-05T11:02:27","modified_gmt":"2023-06-05T09:02:27","slug":"comment-faire-un-profil-topographique-avec-qgis-3-26-3eme-partie","status":"publish","type":"post","link":"https:\/\/www.sigterritoires.fr\/index.php\/comment-faire-un-profil-topographique-avec-qgis-3-26-3eme-partie\/","title":{"rendered":"Comment faire un profil topographique avec QGis 3.26 (3\u00e8me partie)"},"content":{"rendered":"\n

Voici un tutoriel en 5 chapitres sur la nouvelle fonctionnalit\u00e9 de QGis \u00e0 partir de la version 3.26 : les profils d’\u00e9l\u00e9vation.<\/p>\n\n\n\n

Chapitre 1: Profils \u00e0 partir de couches vecteur<\/a><\/p>\n\n\n\n

Chapitre 2: Profils \u00e0 partir de couches raster<\/a><\/p>\n\n\n\n

Chapitre 3: Profils \u00e0 partir de nuages de points (Lidar)<\/p>\n\n\n\n

Chapitre 4: Profils dans la mise en page<\/p>\n\n\n\n

Chapitre 5: Profils dans QField<\/a><\/p>\n\n\n\n\n\n\n\n

Chapitre 3: <\/h1>\n\n\n\n
Dans ce troisi\u00e8me chapitre nous allons aborder deux sujets :<\/p>\n\n\n\n
\n
Le premier est une option qui existe pour les couches vecteur, c’est l’EXTRUSION des entit\u00e9s<\/li>\n\n\n\n
Deuxi\u00e8mement on va voir comment faire des profils \u00e0 partir de nuages de points en particulier des donn\u00e9es LIDAR<\/li>\n<\/ul>\n\n\n\n
\n
<\/iframe><\/span><\/div>\n<\/div><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Les donn\u00e9es n\u00e9cessaires pour ce tutoriel sont <a href=\"https:\/\/nasca.ovh\/downloads\/tuto_elev_prof_data.zip\" title=\"disponibles ici\">disponibles ici<\/a>.<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">Extrusion des couches vectorielles<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">Les couches vectorielles d’entit\u00e9s autres que celles utilis\u00e9es pour la construction du profil, apparaissent dans les profils sous forme de points s’il s’ag\u00eet de couches de points ou de ligne, ou de lignes dans le cas de polygones. Cette repr\u00e9sentation concorde avec la notion d’intersection entre ces types de couches et un ligne de profil. Si les entit\u00e9s sont de type XYZ ou si on affecte une valeur de Z si elle sont de type XY, les repr\u00e9sentations des entit\u00e9s appara\u00eetront positionn\u00e9es sur le profil.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Prenons un exemple de couche de b\u00e2timents (BDTopo), de type polygonZ.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/c1-1-scaled.jpg?ssl=1\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" width=\"640\" height=\"338\" data-attachment-id=\"10558\" data-permalink=\"https:\/\/www.sigterritoires.fr\/index.php\/comment-faire-un-profil-topographique-avec-qgis-3-26-3eme-partie\/c1-1\/\" data-orig-file=\"https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/c1-1-scaled.jpg?fit=2560%2C1351&ssl=1\" data-orig-size=\"2560,1351\" data-comments-opened=\"1\" data-image-meta=\"{"aperture":"0","credit":"","camera":"","caption":"","created_timestamp":"0","copyright":"","focal_length":"0","iso":"0","shutter_speed":"0","title":"","orientation":"0"}\" data-image-title=\"c1-1\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/c1-1-scaled.jpg?fit=640%2C338&ssl=1\" src=\"https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/c1-1.jpg?resize=640%2C338&ssl=1\" alt=\"\" class=\"wp-image-10558\" srcset=\"https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/c1-1-scaled.jpg?resize=1024%2C540&ssl=1 1024w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/c1-1-scaled.jpg?resize=300%2C158&ssl=1 300w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/c1-1-scaled.jpg?resize=768%2C405&ssl=1 768w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/c1-1-scaled.jpg?resize=1536%2C810&ssl=1 1536w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/c1-1-scaled.jpg?resize=2048%2C1080&ssl=1 2048w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/c1-1-scaled.jpg?resize=150%2C79&ssl=1 150w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/c1-1-scaled.jpg?resize=250%2C132&ssl=1 250w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/c1-1-scaled.jpg?w=1280&ssl=1 1280w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/c1-1-scaled.jpg?w=1920&ssl=1 1920w\" sizes=\"auto, (max-width: 640px) 100vw, 640px\" \/><\/a><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Comme c’est une couche XYZ, les intersections des b\u00e2timents et de la ligne de profil apparaissent positionn\u00e9es selon leur Z avec le profil de terrain issu des courbes de niveau (en vert).<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/c2-1.png?ssl=1\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" width=\"640\" height=\"363\" data-attachment-id=\"10559\" data-permalink=\"https:\/\/www.sigterritoires.fr\/index.php\/comment-faire-un-profil-topographique-avec-qgis-3-26-3eme-partie\/c2-1\/\" data-orig-file=\"https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/c2-1.png?fit=841%2C477&ssl=1\" data-orig-size=\"841,477\" data-comments-opened=\"1\" data-image-meta=\"{"aperture":"0","credit":"","camera":"","caption":"","created_timestamp":"0","copyright":"","focal_length":"0","iso":"0","shutter_speed":"0","title":"","orientation":"0"}\" data-image-title=\"c2-1\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/c2-1.png?fit=640%2C363&ssl=1\" src=\"https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/c2-1.png?resize=640%2C363&ssl=1\" alt=\"\" class=\"wp-image-10559\" srcset=\"https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/c2-1.png?w=841&ssl=1 841w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/c2-1.png?resize=300%2C170&ssl=1 300w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/c2-1.png?resize=768%2C436&ssl=1 768w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/c2-1.png?resize=150%2C85&ssl=1 150w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/c2-1.png?resize=250%2C142&ssl=1 250w\" sizes=\"auto, (max-width: 640px) 100vw, 640px\" \/><\/a><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Si le b\u00e2timent n’est pas positionn\u00e9 sur la surface c’est parce que, dans cette couche les b\u00e2timents ont un Z dans la g\u00e9om\u00e9trie qui correspond \u00e0 la hauteur moyenne des b\u00e2timents. Dans la table attributaire nous observons plusieurs donn\u00e9es de hauteur:<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/c3-1.png?ssl=1\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" width=\"640\" height=\"638\" data-attachment-id=\"10560\" data-permalink=\"https:\/\/www.sigterritoires.fr\/index.php\/comment-faire-un-profil-topographique-avec-qgis-3-26-3eme-partie\/c3-1\/\" data-orig-file=\"https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/c3-1.png?fit=1325%2C1321&ssl=1\" data-orig-size=\"1325,1321\" data-comments-opened=\"1\" data-image-meta=\"{"aperture":"0","credit":"","camera":"","caption":"","created_timestamp":"0","copyright":"","focal_length":"0","iso":"0","shutter_speed":"0","title":"","orientation":"0"}\" data-image-title=\"c3-1\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/c3-1.png?fit=640%2C638&ssl=1\" src=\"https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/c3-1.png?resize=640%2C638&ssl=1\" alt=\"\" class=\"wp-image-10560\" srcset=\"https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/c3-1.png?resize=1024%2C1021&ssl=1 1024w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/c3-1.png?resize=300%2C300&ssl=1 300w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/c3-1.png?resize=150%2C150&ssl=1 150w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/c3-1.png?resize=768%2C766&ssl=1 768w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/c3-1.png?resize=120%2C120&ssl=1 120w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/c3-1.png?w=1325&ssl=1 1325w\" sizes=\"auto, (max-width: 640px) 100vw, 640px\" \/><\/a><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Pour que la repr\u00e9sentation soit plus fid\u00e8le nous allons modifier le Z utilis\u00e9 pour cette couche par l’altitude minimale au sol. Pour faire cela nous allons, dans la fen\u00eatre Propri\u00e9t\u00e9s , mettre \u00ab\u00a0<strong><em>Fix\u00e9 au terrain<\/em><\/strong>\u00a0\u00bb dans <strong><em>Verrouillage de l’\u00e9l\u00e9vation<\/em><\/strong> et on va lui affecter le champ \u00ab\u00a0<strong><em>Altitude_minimale_so<\/em><\/strong>l\u00a0\u00bb<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/c4-1.png?ssl=1\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" width=\"640\" height=\"271\" data-attachment-id=\"10561\" data-permalink=\"https:\/\/www.sigterritoires.fr\/index.php\/comment-faire-un-profil-topographique-avec-qgis-3-26-3eme-partie\/c4-1-2\/\" data-orig-file=\"https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/c4-1.png?fit=3525%2C1495&ssl=1\" data-orig-size=\"3525,1495\" data-comments-opened=\"1\" data-image-meta=\"{"aperture":"0","credit":"","camera":"","caption":"","created_timestamp":"0","copyright":"","focal_length":"0","iso":"0","shutter_speed":"0","title":"","orientation":"0"}\" data-image-title=\"c4-1\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/c4-1.png?fit=640%2C271&ssl=1\" src=\"https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/c4-1.png?resize=640%2C271&ssl=1\" alt=\"\" class=\"wp-image-10561\" srcset=\"https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/c4-1.png?resize=1024%2C434&ssl=1 1024w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/c4-1.png?resize=300%2C127&ssl=1 300w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/c4-1.png?resize=768%2C326&ssl=1 768w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/c4-1.png?resize=1536%2C651&ssl=1 1536w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/c4-1.png?resize=2048%2C869&ssl=1 2048w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/c4-1.png?resize=150%2C64&ssl=1 150w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/c4-1.png?resize=250%2C106&ssl=1 250w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/c4-1.png?w=1280&ssl=1 1280w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/c4-1.png?w=1920&ssl=1 1920w\" sizes=\"auto, (max-width: 640px) 100vw, 640px\" \/><\/a><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Maintenant la base des b\u00e2timents se situe l\u00e9g\u00e8rement sous terre, ce qui est logique.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/c5-1.png?ssl=1\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" width=\"640\" height=\"357\" data-attachment-id=\"10562\" data-permalink=\"https:\/\/www.sigterritoires.fr\/index.php\/comment-faire-un-profil-topographique-avec-qgis-3-26-3eme-partie\/c5-1\/\" data-orig-file=\"https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/c5-1.png?fit=877%2C489&ssl=1\" data-orig-size=\"877,489\" data-comments-opened=\"1\" data-image-meta=\"{"aperture":"0","credit":"","camera":"","caption":"","created_timestamp":"0","copyright":"","focal_length":"0","iso":"0","shutter_speed":"0","title":"","orientation":"0"}\" data-image-title=\"c5-1\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/c5-1.png?fit=640%2C357&ssl=1\" src=\"https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/c5-1.png?resize=640%2C357&ssl=1\" alt=\"\" class=\"wp-image-10562\" srcset=\"https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/c5-1.png?w=877&ssl=1 877w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/c5-1.png?resize=300%2C167&ssl=1 300w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/c5-1.png?resize=768%2C428&ssl=1 768w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/c5-1.png?resize=150%2C84&ssl=1 150w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/c5-1.png?resize=250%2C139&ssl=1 250w\" sizes=\"auto, (max-width: 640px) 100vw, 640px\" \/><\/a><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Pour exploiter compl\u00e8tement les informations disponibles, nous allons utiliser la fonction d’extrusion pour repr\u00e9senter au mieux les b\u00e2timents en coupe.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Dans la fen\u00eatre de <strong><em>Propri\u00e9t\u00e9s<\/em><\/strong>, on coche la case <strong><em>Activer l’extrusion<\/em><\/strong> et on affecte la valeur de l’attribut <strong><em>\u00ab\u00a0hauteur\u00a0\u00bb <\/em><\/strong><\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/c6-1.png?ssl=1\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" width=\"640\" height=\"429\" data-attachment-id=\"10563\" data-permalink=\"https:\/\/www.sigterritoires.fr\/index.php\/comment-faire-un-profil-topographique-avec-qgis-3-26-3eme-partie\/c6-1\/\" data-orig-file=\"https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/c6-1.png?fit=2951%2C1977&ssl=1\" data-orig-size=\"2951,1977\" data-comments-opened=\"1\" data-image-meta=\"{"aperture":"0","credit":"","camera":"","caption":"","created_timestamp":"0","copyright":"","focal_length":"0","iso":"0","shutter_speed":"0","title":"","orientation":"0"}\" data-image-title=\"c6-1\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/c6-1.png?fit=640%2C429&ssl=1\" src=\"https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/c6-1.png?resize=640%2C429&ssl=1\" alt=\"\" class=\"wp-image-10563\" srcset=\"https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/c6-1.png?resize=1024%2C686&ssl=1 1024w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/c6-1.png?resize=300%2C201&ssl=1 300w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/c6-1.png?resize=768%2C515&ssl=1 768w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/c6-1.png?resize=1536%2C1029&ssl=1 1536w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/c6-1.png?resize=2048%2C1372&ssl=1 2048w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/c6-1.png?resize=150%2C100&ssl=1 150w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/c6-1.png?resize=224%2C150&ssl=1 224w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/c6-1.png?w=1280&ssl=1 1280w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/c6-1.png?w=1920&ssl=1 1920w\" sizes=\"auto, (max-width: 640px) 100vw, 640px\" \/><\/a><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">On voit maintenant les coupes des b\u00e2timents sur le profil<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/c7.png?ssl=1\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" width=\"640\" height=\"196\" data-attachment-id=\"10564\" data-permalink=\"https:\/\/www.sigterritoires.fr\/index.php\/comment-faire-un-profil-topographique-avec-qgis-3-26-3eme-partie\/c7-2\/\" data-orig-file=\"https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/c7.png?fit=2925%2C895&ssl=1\" data-orig-size=\"2925,895\" data-comments-opened=\"1\" data-image-meta=\"{"aperture":"0","credit":"","camera":"","caption":"","created_timestamp":"0","copyright":"","focal_length":"0","iso":"0","shutter_speed":"0","title":"","orientation":"0"}\" data-image-title=\"c7\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/c7.png?fit=640%2C196&ssl=1\" src=\"https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/c7.png?resize=640%2C196&ssl=1\" alt=\"\" class=\"wp-image-10564\" srcset=\"https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/c7.png?resize=1024%2C313&ssl=1 1024w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/c7.png?resize=300%2C92&ssl=1 300w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/c7.png?resize=768%2C235&ssl=1 768w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/c7.png?resize=1536%2C470&ssl=1 1536w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/c7.png?resize=2048%2C627&ssl=1 2048w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/c7.png?resize=150%2C46&ssl=1 150w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/c7.png?resize=250%2C76&ssl=1 250w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/c7.png?w=1280&ssl=1 1280w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/c7.png?w=1920&ssl=1 1920w\" sizes=\"auto, (max-width: 640px) 100vw, 640px\" \/><\/a><\/figure>\n\n\n\n<h1 class=\"wp-block-heading\">Profils \u00e0 partir de nuages de points (LIDAR)<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">Si on charge un semis de points LIdar dans notre projet, celui-ci s’affiche automatiquement sur le profil en cours.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/c8.png?ssl=1\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" width=\"640\" height=\"359\" data-attachment-id=\"10565\" data-permalink=\"https:\/\/www.sigterritoires.fr\/index.php\/comment-faire-un-profil-topographique-avec-qgis-3-26-3eme-partie\/c8\/\" data-orig-file=\"https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/c8.png?fit=3833%2C2151&ssl=1\" data-orig-size=\"3833,2151\" data-comments-opened=\"1\" data-image-meta=\"{"aperture":"0","credit":"","camera":"","caption":"","created_timestamp":"0","copyright":"","focal_length":"0","iso":"0","shutter_speed":"0","title":"","orientation":"0"}\" data-image-title=\"c8\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/c8.png?fit=640%2C359&ssl=1\" src=\"https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/c8.png?resize=640%2C359&ssl=1\" alt=\"\" class=\"wp-image-10565\" srcset=\"https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/c8.png?resize=1024%2C575&ssl=1 1024w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/c8.png?resize=300%2C168&ssl=1 300w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/c8.png?resize=768%2C431&ssl=1 768w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/c8.png?resize=1536%2C862&ssl=1 1536w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/c8.png?resize=2048%2C1149&ssl=1 2048w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/c8.png?resize=150%2C84&ssl=1 150w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/c8.png?resize=250%2C140&ssl=1 250w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/c8.png?w=1280&ssl=1 1280w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/c8.png?w=1920&ssl=1 1920w\" sizes=\"auto, (max-width: 640px) 100vw, 640px\" \/><\/a><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Vous pourrez alors remarquer l’ajustement des extrusions et des points lidar<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/c9.png?ssl=1\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" width=\"603\" height=\"423\" data-attachment-id=\"10566\" data-permalink=\"https:\/\/www.sigterritoires.fr\/index.php\/comment-faire-un-profil-topographique-avec-qgis-3-26-3eme-partie\/c9\/\" data-orig-file=\"https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/c9.png?fit=603%2C423&ssl=1\" data-orig-size=\"603,423\" data-comments-opened=\"1\" data-image-meta=\"{"aperture":"0","credit":"","camera":"","caption":"","created_timestamp":"0","copyright":"","focal_length":"0","iso":"0","shutter_speed":"0","title":"","orientation":"0"}\" data-image-title=\"c9\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/c9.png?fit=603%2C423&ssl=1\" src=\"https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/c9.png?resize=603%2C423&ssl=1\" alt=\"\" class=\"wp-image-10566\" srcset=\"https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/c9.png?w=603&ssl=1 603w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/c9.png?resize=300%2C210&ssl=1 300w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/c9.png?resize=150%2C105&ssl=1 150w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/c9.png?resize=214%2C150&ssl=1 214w\" sizes=\"auto, (max-width: 603px) 100vw, 603px\" \/><\/a><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Contrairement aux polygones des b\u00e2timents qui ont une taille en X et Y, les points Lidar n’ont pratiquement pas de taille. Il est donc tr\u00e8s improbable que notre ligne intersecte exactement des points du nuage. L’extension utilise un param\u00e8tre d\u00e9nomm\u00e9 TOLERANCE qui consiste \u00e0 d\u00e9finir une taille de fen\u00eatre \u00e0 gauche et \u00e0 droite de notre ligne de profil. Tous les points situ\u00e9s sur cette bande seront affich\u00e9s dans le profil<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/c10.png?ssl=1\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" width=\"640\" height=\"395\" data-attachment-id=\"10567\" data-permalink=\"https:\/\/www.sigterritoires.fr\/index.php\/comment-faire-un-profil-topographique-avec-qgis-3-26-3eme-partie\/c10\/\" data-orig-file=\"https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/c10.png?fit=1885%2C1163&ssl=1\" data-orig-size=\"1885,1163\" data-comments-opened=\"1\" data-image-meta=\"{"aperture":"0","credit":"","camera":"","caption":"","created_timestamp":"0","copyright":"","focal_length":"0","iso":"0","shutter_speed":"0","title":"","orientation":"0"}\" data-image-title=\"c10\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/c10.png?fit=640%2C395&ssl=1\" src=\"https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/c10.png?resize=640%2C395&ssl=1\" alt=\"\" class=\"wp-image-10567\" srcset=\"https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/c10.png?resize=1024%2C632&ssl=1 1024w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/c10.png?resize=300%2C185&ssl=1 300w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/c10.png?resize=768%2C474&ssl=1 768w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/c10.png?resize=1536%2C948&ssl=1 1536w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/c10.png?resize=150%2C93&ssl=1 150w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/c10.png?resize=243%2C150&ssl=1 243w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/c10.png?w=1885&ssl=1 1885w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/c10.png?w=1280&ssl=1 1280w\" sizes=\"auto, (max-width: 640px) 100vw, 640px\" \/><\/a><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Dans cette image, on voit la valeur de la TOLERANCE (5 m\u00e8tres) et sa repr\u00e9sentation sur la fen\u00eatre cartographique: la bande de 5 m\u00e8tres de chaque c\u00f4t\u00e9 de la ligne de profil.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Si nous modifions la Tol\u00e9rance \u00e0 15 m\u00e8tres de chaque c\u00f4t\u00e9, nous voyons comment le nuage de points se densifie, car il prend en compte beaucoup plus de points pr\u00e9sents dans la bande de tol\u00e9rance.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/c11.png?ssl=1\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" width=\"640\" height=\"413\" data-attachment-id=\"10568\" data-permalink=\"https:\/\/www.sigterritoires.fr\/index.php\/comment-faire-un-profil-topographique-avec-qgis-3-26-3eme-partie\/c11\/\" data-orig-file=\"https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/c11.png?fit=2026%2C1306&ssl=1\" data-orig-size=\"2026,1306\" data-comments-opened=\"1\" data-image-meta=\"{"aperture":"0","credit":"","camera":"","caption":"","created_timestamp":"0","copyright":"","focal_length":"0","iso":"0","shutter_speed":"0","title":"","orientation":"0"}\" data-image-title=\"c11\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/c11.png?fit=640%2C413&ssl=1\" src=\"https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/c11.png?resize=640%2C413&ssl=1\" alt=\"\" class=\"wp-image-10568\" srcset=\"https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/c11.png?resize=1024%2C660&ssl=1 1024w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/c11.png?resize=300%2C193&ssl=1 300w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/c11.png?resize=768%2C495&ssl=1 768w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/c11.png?resize=1536%2C990&ssl=1 1536w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/c11.png?resize=150%2C97&ssl=1 150w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/c11.png?resize=233%2C150&ssl=1 233w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/c11.png?w=2026&ssl=1 2026w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/c11.png?w=1280&ssl=1 1280w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/c11.png?w=1920&ssl=1 1920w\" sizes=\"auto, (max-width: 640px) 100vw, 640px\" \/><\/a><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Pour finir voici le profil avec seulement les valeurs du LIDAR:<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/c12.png?ssl=1\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" width=\"640\" height=\"191\" data-attachment-id=\"10569\" data-permalink=\"https:\/\/www.sigterritoires.fr\/index.php\/comment-faire-un-profil-topographique-avec-qgis-3-26-3eme-partie\/c12\/\" data-orig-file=\"https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/c12.png?fit=3015%2C898&ssl=1\" data-orig-size=\"3015,898\" data-comments-opened=\"1\" data-image-meta=\"{"aperture":"0","credit":"","camera":"","caption":"","created_timestamp":"0","copyright":"","focal_length":"0","iso":"0","shutter_speed":"0","title":"","orientation":"0"}\" data-image-title=\"c12\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/c12.png?fit=640%2C191&ssl=1\" src=\"https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/c12.png?resize=640%2C191&ssl=1\" alt=\"\" class=\"wp-image-10569\" srcset=\"https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/c12.png?resize=1024%2C305&ssl=1 1024w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/c12.png?resize=300%2C89&ssl=1 300w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/c12.png?resize=768%2C229&ssl=1 768w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/c12.png?resize=1536%2C457&ssl=1 1536w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/c12.png?resize=2048%2C610&ssl=1 2048w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/c12.png?resize=150%2C45&ssl=1 150w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/c12.png?resize=250%2C74&ssl=1 250w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/c12.png?w=1280&ssl=1 1280w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/c12.png?w=1920&ssl=1 1920w\" sizes=\"auto, (max-width: 640px) 100vw, 640px\" \/><\/a><\/figure>\n","protected":false},"excerpt":{"rendered":"<p>Voici un tutoriel en 5 chapitres sur la nouvelle fonctionnalit\u00e9 de QGis \u00e0 partir de la version 3.26 : les profils d’\u00e9l\u00e9vation. Chapitre 1: Profils \u00e0 partir de couches vecteur Chapitre 2: Profils \u00e0 partir de…<\/p>\n","protected":false},"author":1,"featured_media":10569,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_bbp_topic_count":0,"_bbp_reply_count":0,"_bbp_total_topic_count":0,"_bbp_total_reply_count":0,"_bbp_voice_count":0,"_bbp_anonymous_reply_count":0,"_bbp_topic_count_hidden":0,"_bbp_reply_count_hidden":0,"_bbp_forum_subforum_count":0,"sfsi_plus_gutenberg_text_before_share":"","sfsi_plus_gutenberg_show_text_before_share":"","sfsi_plus_gutenberg_icon_type":"","sfsi_plus_gutenberg_icon_alignemt":"","sfsi_plus_gutenburg_max_per_row":"","_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_post_was_ever_published":false},"categories":[149,62],"tags":[33,142,2066,2068,2070,121,58,2016,180],"class_list":["post-10557","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-mnt","category-qgis-2","tag-elevation","tag-extrusion","tag-las","tag-laz","tag-lidar","tag-profil","tag-qgis","tag-topographique","tag-tutoriel"],"aioseo_notices":[],"jetpack_featured_media_url":"https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/c12.png?fit=3015%2C898&ssl=1","jetpack_shortlink":"https:\/\/wp.me\/p6XU0A-2Kh","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.sigterritoires.fr\/index.php\/wp-json\/wp\/v2\/posts\/10557","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.sigterritoires.fr\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.sigterritoires.fr\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.sigterritoires.fr\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.sigterritoires.fr\/index.php\/wp-json\/wp\/v2\/comments?post=10557"}],"version-history":[{"count":0,"href":"https:\/\/www.sigterritoires.fr\/index.php\/wp-json\/wp\/v2\/posts\/10557\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.sigterritoires.fr\/index.php\/wp-json\/wp\/v2\/media\/10569"}],"wp:attachment":[{"href":"https:\/\/www.sigterritoires.fr\/index.php\/wp-json\/wp\/v2\/media?parent=10557"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.sigterritoires.fr\/index.php\/wp-json\/wp\/v2\/categories?post=10557"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.sigterritoires.fr\/index.php\/wp-json\/wp\/v2\/tags?post=10557"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}