﻿{"id":10530,"date":"2023-05-30T10:30:58","date_gmt":"2023-05-30T08:30:58","guid":{"rendered":"https:\/\/www.sigterritoires.fr\/?p=10530"},"modified":"2023-06-24T23:03:28","modified_gmt":"2023-06-24T21:03:28","slug":"how-to-create-a-topographic-profile-with-qgis-3-26-part-1","status":"publish","type":"post","link":"https:\/\/www.sigterritoires.fr\/index.php\/en\/how-to-create-a-topographic-profile-with-qgis-3-26-part-1\/","title":{"rendered":"How to create a topographic profile with QGis 3.26 (Part 1)"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">Here&rsquo;s a 5-chapter tutorial on the new QGis feature in version 3.26: elevation profiles.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Chapter 1: Profiles from vector layers<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Chapter 2: Profiles from raster layers<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Chapter 3: Profiles from point clouds (Lidar)<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Chapter 4: Profiles layout<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Chapter 5: Profiles in <a href=\"https:\/\/www.sigterritoires.fr\/index.php\/en\/qfield-the-mobile-device-of-qgis-for-android\/\">QField<\/a><\/p>\n\n\n\n<!--more-->\n\n\n\n<h1 class=\"wp-block-heading\">Chapter 1:<\/h1>\n\n\n\n<h1 class=\"wp-block-heading\">The elevation profile panel<\/h1>\n\n\n\n<figure class=\"wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-4-3 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<div class=\"jetpack-video-wrapper\"><span class=\"embed-youtube\" style=\"text-align:center; display: block;\"><iframe loading=\"lazy\" class=\"youtube-player\" width=\"640\" height=\"360\" src=\"https:\/\/www.youtube.com\/embed\/4lX5xletM5g?version=3&#038;rel=1&#038;showsearch=0&#038;showinfo=1&#038;iv_load_policy=1&#038;fs=1&#038;hl=fr-FR&#038;autohide=2&#038;wmode=transparent\" allowfullscreen=\"true\" style=\"border:0;\" sandbox=\"allow-scripts allow-same-origin allow-popups allow-presentation allow-popups-to-escape-sandbox\"><\/iframe><\/span><\/div>\n<\/div><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">The data required for this tutorial is <a href=\"https:\/\/nasca.ovh\/downloads\/tuto_elev_prof_data.zip\" title=\"available here\">available here<\/a>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">We&rsquo;ll start this tutorial by getting to grips with the \u00ab\u00a0<strong><em>Elevation profile<\/em><\/strong>\u00a0\u00bb panel. To display it, go to the menu <strong><em>View-&gt;Elevation profile<\/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\/a1-5.png?ssl=1\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" width=\"640\" height=\"355\" data-attachment-id=\"10505\" data-permalink=\"https:\/\/www.sigterritoires.fr\/index.php\/comment-faire-un-profil-topographique-avec-qgis-3-26-1ere-partie\/a1-5-2\/\" data-orig-file=\"https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a1-5.png?fit=3847%2C2133&amp;ssl=1\" data-orig-size=\"3847,2133\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;}\" data-image-title=\"a1-5\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a1-5.png?fit=640%2C355&amp;ssl=1\" src=\"https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a1-5.png?resize=640%2C355&#038;ssl=1\" alt=\"\" class=\"wp-image-10505\" srcset=\"https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a1-5.png?resize=1024%2C568&amp;ssl=1 1024w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a1-5.png?resize=300%2C166&amp;ssl=1 300w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a1-5.png?resize=768%2C426&amp;ssl=1 768w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a1-5.png?resize=1536%2C852&amp;ssl=1 1536w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a1-5.png?resize=2048%2C1136&amp;ssl=1 2048w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a1-5.png?resize=150%2C83&amp;ssl=1 150w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a1-5.png?resize=250%2C139&amp;ssl=1 250w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a1-5.png?w=1280&amp;ssl=1 1280w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a1-5.png?w=1920&amp;ssl=1 1920w\" sizes=\"auto, (max-width: 640px) 100vw, 640px\" \/><\/a><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">This panel is in turn divided into two panels: layers and profiles. There&rsquo;s also a toolbar.<\/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\/a2-3-scaled.jpg?ssl=1\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" width=\"640\" height=\"232\" data-attachment-id=\"10506\" data-permalink=\"https:\/\/www.sigterritoires.fr\/index.php\/comment-faire-un-profil-topographique-avec-qgis-3-26-1ere-partie\/a2-3-2\/\" data-orig-file=\"https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a2-3-scaled.jpg?fit=2560%2C928&amp;ssl=1\" data-orig-size=\"2560,928\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;}\" data-image-title=\"a2-3\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a2-3-scaled.jpg?fit=640%2C232&amp;ssl=1\" src=\"https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a2-3.jpg?resize=640%2C232&#038;ssl=1\" alt=\"\" class=\"wp-image-10506\" srcset=\"https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a2-3-scaled.jpg?resize=1024%2C371&amp;ssl=1 1024w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a2-3-scaled.jpg?resize=300%2C109&amp;ssl=1 300w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a2-3-scaled.jpg?resize=768%2C278&amp;ssl=1 768w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a2-3-scaled.jpg?resize=1536%2C557&amp;ssl=1 1536w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a2-3-scaled.jpg?resize=2048%2C742&amp;ssl=1 2048w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a2-3-scaled.jpg?resize=150%2C54&amp;ssl=1 150w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a2-3-scaled.jpg?resize=250%2C91&amp;ssl=1 250w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a2-3-scaled.jpg?w=1280&amp;ssl=1 1280w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a2-3-scaled.jpg?w=1920&amp;ssl=1 1920w\" sizes=\"auto, (max-width: 640px) 100vw, 640px\" \/><\/a><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">You end up with two layer panels: the project layer and the profile layer. You cannot load layers into profile layers if they are not in the project layer panel. This apparent duplication is explained by the fact that, with the project layer, you control the layer&rsquo;s appearance in the map window, while with the profile layer you control its profile parameters.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">First concept: what is a profile?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">A profile is the result of intersecting a polyline with a layer of terrain heights, and then displaying the XYZ cross-section of the terrain as a profile.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">From this definition we can draw the first rule of use: at least two classes of entity are required for a profile to be built: a layer with terrain heights (raster, vector, point cloud, etc.) and a polyline entity that defines the profile to be built. This entity can be built freehand, in the map window, using the <strong><em>Capture Curve tool.<\/em><\/strong><\/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\/a3-5.png?ssl=1\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" width=\"640\" height=\"228\" data-attachment-id=\"10507\" data-permalink=\"https:\/\/www.sigterritoires.fr\/index.php\/comment-faire-un-profil-topographique-avec-qgis-3-26-1ere-partie\/a3-5-2\/\" data-orig-file=\"https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a3-5.png?fit=952%2C339&amp;ssl=1\" data-orig-size=\"952,339\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;}\" data-image-title=\"a3-5\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a3-5.png?fit=640%2C228&amp;ssl=1\" src=\"https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a3-5.png?resize=640%2C228&#038;ssl=1\" alt=\"\" class=\"wp-image-10507\" srcset=\"https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a3-5.png?w=952&amp;ssl=1 952w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a3-5.png?resize=300%2C107&amp;ssl=1 300w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a3-5.png?resize=768%2C273&amp;ssl=1 768w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a3-5.png?resize=150%2C53&amp;ssl=1 150w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a3-5.png?resize=250%2C89&amp;ssl=1 250w\" sizes=\"auto, (max-width: 640px) 100vw, 640px\" \/><\/a><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Or it can be selected by capturing it from an existing polyline layer, using the <strong><em>Capture curve tool <\/em><\/strong><\/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\/a4-5.png?ssl=1\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" width=\"640\" height=\"180\" data-attachment-id=\"10508\" data-permalink=\"https:\/\/www.sigterritoires.fr\/index.php\/comment-faire-un-profil-topographique-avec-qgis-3-26-1ere-partie\/a4-5-2\/\" data-orig-file=\"https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a4-5.png?fit=1023%2C288&amp;ssl=1\" data-orig-size=\"1023,288\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;}\" data-image-title=\"a4-5\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a4-5.png?fit=640%2C180&amp;ssl=1\" src=\"https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a4-5.png?resize=640%2C180&#038;ssl=1\" alt=\"\" class=\"wp-image-10508\" srcset=\"https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a4-5.png?w=1023&amp;ssl=1 1023w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a4-5.png?resize=300%2C84&amp;ssl=1 300w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a4-5.png?resize=768%2C216&amp;ssl=1 768w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a4-5.png?resize=150%2C42&amp;ssl=1 150w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a4-5.png?resize=250%2C70&amp;ssl=1 250w\" sizes=\"auto, (max-width: 640px) 100vw, 640px\" \/><\/a><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Second notion: profile layer geometry types<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Layers in the profile layer panel can be of two types:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>2D geometries, i.e. with X and Y values (MultiLineString, Polygon,\u2026)<\/li>\n\n\n\n<li>3D geometries, i.e. with X, Y and Z values (MultiLineStringZ, PolygonZ, etc.).<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">A third case may arise when a layer has an XYZ definition and Z values are not specified. In this case, it behaves like a 2D (XY) layer.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">2D layers<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">If you load a 2D layer<\/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\/a5-3.png?ssl=1\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" width=\"640\" height=\"351\" data-attachment-id=\"10510\" data-permalink=\"https:\/\/www.sigterritoires.fr\/index.php\/comment-faire-un-profil-topographique-avec-qgis-3-26-1ere-partie\/a5-3-2\/\" data-orig-file=\"https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a5-3.png?fit=942%2C516&amp;ssl=1\" data-orig-size=\"942,516\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;}\" data-image-title=\"a5-3\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a5-3.png?fit=640%2C351&amp;ssl=1\" src=\"https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a5-3.png?resize=640%2C351&#038;ssl=1\" alt=\"\" class=\"wp-image-10510\" srcset=\"https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a5-3.png?w=942&amp;ssl=1 942w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a5-3.png?resize=300%2C164&amp;ssl=1 300w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a5-3.png?resize=768%2C421&amp;ssl=1 768w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a5-3.png?resize=150%2C82&amp;ssl=1 150w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a5-3.png?resize=250%2C137&amp;ssl=1 250w\" sizes=\"auto, (max-width: 640px) 100vw, 640px\" \/><\/a><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">If we draw a profile line, the result will be as follows<\/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\/a6-5-scaled.jpg?ssl=1\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" width=\"640\" height=\"341\" data-attachment-id=\"10511\" data-permalink=\"https:\/\/www.sigterritoires.fr\/index.php\/comment-faire-un-profil-topographique-avec-qgis-3-26-1ere-partie\/a6-5-2\/\" data-orig-file=\"https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a6-5-scaled.jpg?fit=2560%2C1365&amp;ssl=1\" data-orig-size=\"2560,1365\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;}\" data-image-title=\"a6-5\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a6-5-scaled.jpg?fit=640%2C341&amp;ssl=1\" src=\"https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a6-5.jpg?resize=640%2C341&#038;ssl=1\" alt=\"\" class=\"wp-image-10511\" srcset=\"https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a6-5-scaled.jpg?resize=1024%2C546&amp;ssl=1 1024w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a6-5-scaled.jpg?resize=300%2C160&amp;ssl=1 300w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a6-5-scaled.jpg?resize=768%2C410&amp;ssl=1 768w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a6-5-scaled.jpg?resize=1536%2C819&amp;ssl=1 1536w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a6-5-scaled.jpg?resize=2048%2C1092&amp;ssl=1 2048w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a6-5-scaled.jpg?resize=150%2C80&amp;ssl=1 150w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a6-5-scaled.jpg?resize=250%2C133&amp;ssl=1 250w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a6-5-scaled.jpg?w=1280&amp;ssl=1 1280w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a6-5-scaled.jpg?w=1920&amp;ssl=1 1920w\" sizes=\"auto, (max-width: 640px) 100vw, 640px\" \/><\/a><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">The extension is unable to find the height values. To overcome this problem, we need to indicate where the Z values are.<\/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\/a7-3.png?ssl=1\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" width=\"640\" height=\"674\" data-attachment-id=\"10512\" data-permalink=\"https:\/\/www.sigterritoires.fr\/index.php\/comment-faire-un-profil-topographique-avec-qgis-3-26-1ere-partie\/a7-3-2\/\" data-orig-file=\"https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a7-3.png?fit=1333%2C1405&amp;ssl=1\" data-orig-size=\"1333,1405\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;}\" data-image-title=\"a7-3\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a7-3.png?fit=640%2C674&amp;ssl=1\" src=\"https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a7-3.png?resize=640%2C674&#038;ssl=1\" alt=\"\" class=\"wp-image-10512\" srcset=\"https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a7-3.png?resize=972%2C1024&amp;ssl=1 972w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a7-3.png?resize=285%2C300&amp;ssl=1 285w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a7-3.png?resize=768%2C809&amp;ssl=1 768w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a7-3.png?resize=142%2C150&amp;ssl=1 142w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a7-3.png?w=1333&amp;ssl=1 1333w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a7-3.png?w=1280&amp;ssl=1 1280w\" sizes=\"auto, (max-width: 640px) 100vw, 640px\" \/><\/a><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">In the case of this layer, they are located in the ALTITUDE field of the attribute table.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">To perform this operation, open the <strong><em>properties <\/em><\/strong>menu <span style=\"text-decoration: underline;\">in the layer panel of the profile<\/span><\/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\/a8-2.png?ssl=1\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" width=\"640\" height=\"209\" data-attachment-id=\"10513\" data-permalink=\"https:\/\/www.sigterritoires.fr\/index.php\/comment-faire-un-profil-topographique-avec-qgis-3-26-1ere-partie\/a8-2-3\/\" data-orig-file=\"https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a8-2.png?fit=880%2C288&amp;ssl=1\" data-orig-size=\"880,288\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;}\" data-image-title=\"a8-2\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a8-2.png?fit=640%2C209&amp;ssl=1\" src=\"https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a8-2.png?resize=640%2C209&#038;ssl=1\" alt=\"\" class=\"wp-image-10513\" srcset=\"https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a8-2.png?w=880&amp;ssl=1 880w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a8-2.png?resize=300%2C98&amp;ssl=1 300w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a8-2.png?resize=768%2C251&amp;ssl=1 768w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a8-2.png?resize=150%2C49&amp;ssl=1 150w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a8-2.png?resize=250%2C82&amp;ssl=1 250w\" sizes=\"auto, (max-width: 640px) 100vw, 640px\" \/><\/a><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">In the <strong><em>Properties <\/em><\/strong>window, we will always work in the <strong><em>ELEVATION <\/em><\/strong>tab.<\/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\/a9-2.png?ssl=1\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" width=\"640\" height=\"373\" data-attachment-id=\"10514\" data-permalink=\"https:\/\/www.sigterritoires.fr\/index.php\/comment-faire-un-profil-topographique-avec-qgis-3-26-1ere-partie\/a9-2-2\/\" data-orig-file=\"https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a9-2.png?fit=3555%2C2073&amp;ssl=1\" data-orig-size=\"3555,2073\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;}\" data-image-title=\"a9-2\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a9-2.png?fit=640%2C373&amp;ssl=1\" src=\"https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a9-2.png?resize=640%2C373&#038;ssl=1\" alt=\"\" class=\"wp-image-10514\" srcset=\"https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a9-2.png?resize=1024%2C597&amp;ssl=1 1024w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a9-2.png?resize=300%2C175&amp;ssl=1 300w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a9-2.png?resize=768%2C448&amp;ssl=1 768w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a9-2.png?resize=1536%2C896&amp;ssl=1 1536w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a9-2.png?resize=2048%2C1194&amp;ssl=1 2048w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a9-2.png?resize=150%2C87&amp;ssl=1 150w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a9-2.png?resize=250%2C146&amp;ssl=1 250w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a9-2.png?w=1280&amp;ssl=1 1280w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a9-2.png?w=1920&amp;ssl=1 1920w\" sizes=\"auto, (max-width: 640px) 100vw, 640px\" \/><\/a><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">To take the ALTITUDE attribute into account, we open the <strong><em>Value defined by the data<\/em><\/strong> in the <strong><em>Offset <\/em><\/strong>field and point to the <strong><em>ALTITUDE <\/em><\/strong>field.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The result is a height profile:<\/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\/a10-1-scaled.jpg?ssl=1\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" width=\"640\" height=\"309\" data-attachment-id=\"10515\" data-permalink=\"https:\/\/www.sigterritoires.fr\/index.php\/comment-faire-un-profil-topographique-avec-qgis-3-26-1ere-partie\/a10-1\/\" data-orig-file=\"https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a10-1-scaled.jpg?fit=2560%2C1238&amp;ssl=1\" data-orig-size=\"2560,1238\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;}\" data-image-title=\"a10-1\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a10-1-scaled.jpg?fit=640%2C309&amp;ssl=1\" src=\"https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a10-1.jpg?resize=640%2C309&#038;ssl=1\" alt=\"\" class=\"wp-image-10515\" srcset=\"https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a10-1-scaled.jpg?resize=1024%2C495&amp;ssl=1 1024w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a10-1-scaled.jpg?resize=300%2C145&amp;ssl=1 300w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a10-1-scaled.jpg?resize=768%2C372&amp;ssl=1 768w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a10-1-scaled.jpg?resize=1536%2C743&amp;ssl=1 1536w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a10-1-scaled.jpg?resize=2048%2C991&amp;ssl=1 2048w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a10-1-scaled.jpg?resize=150%2C73&amp;ssl=1 150w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a10-1-scaled.jpg?resize=250%2C121&amp;ssl=1 250w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a10-1-scaled.jpg?w=1280&amp;ssl=1 1280w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a10-1-scaled.jpg?w=1920&amp;ssl=1 1920w\" sizes=\"auto, (max-width: 640px) 100vw, 640px\" \/><\/a><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">3D layers<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">If you load a layer of type Z,<\/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\/a11-3.png?ssl=1\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" width=\"640\" height=\"377\" data-attachment-id=\"10518\" data-permalink=\"https:\/\/www.sigterritoires.fr\/index.php\/comment-faire-un-profil-topographique-avec-qgis-3-26-1ere-partie\/a11-3-2\/\" data-orig-file=\"https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a11-3.png?fit=881%2C519&amp;ssl=1\" data-orig-size=\"881,519\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;}\" data-image-title=\"a11-3\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a11-3.png?fit=640%2C377&amp;ssl=1\" src=\"https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a11-3.png?resize=640%2C377&#038;ssl=1\" alt=\"\" class=\"wp-image-10518\" srcset=\"https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a11-3.png?w=881&amp;ssl=1 881w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a11-3.png?resize=300%2C177&amp;ssl=1 300w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a11-3.png?resize=768%2C452&amp;ssl=1 768w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a11-3.png?resize=150%2C88&amp;ssl=1 150w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a11-3.png?resize=250%2C147&amp;ssl=1 250w\" sizes=\"auto, (max-width: 640px) 100vw, 640px\" \/><\/a><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">We don&rsquo;t need to do anything. When we draw the polyline, we obtain the profile directly<\/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\/a12.png?ssl=1\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" width=\"640\" height=\"262\" data-attachment-id=\"10519\" data-permalink=\"https:\/\/www.sigterritoires.fr\/index.php\/comment-faire-un-profil-topographique-avec-qgis-3-26-1ere-partie\/a12-5\/\" data-orig-file=\"https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a12.png?fit=3169%2C1297&amp;ssl=1\" data-orig-size=\"3169,1297\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;}\" data-image-title=\"a12\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a12.png?fit=640%2C262&amp;ssl=1\" src=\"https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a12.png?resize=640%2C262&#038;ssl=1\" alt=\"\" class=\"wp-image-10519\" srcset=\"https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a12.png?resize=1024%2C419&amp;ssl=1 1024w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a12.png?resize=300%2C123&amp;ssl=1 300w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a12.png?resize=768%2C314&amp;ssl=1 768w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a12.png?resize=1536%2C629&amp;ssl=1 1536w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a12.png?resize=2048%2C838&amp;ssl=1 2048w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a12.png?resize=150%2C61&amp;ssl=1 150w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a12.png?resize=250%2C102&amp;ssl=1 250w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a12.png?w=1280&amp;ssl=1 1280w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a12.png?w=1920&amp;ssl=1 1920w\" sizes=\"auto, (max-width: 640px) 100vw, 640px\" \/><\/a><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Modify profile symbology<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">When you move the cursor over the profile line, you&rsquo;ll notice that a cursor also moves over the polyline in the map window. If you ask for information on a profile point, the corresponding contour line will be highlighted, in addition to the profile information.<\/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\/a13.png?ssl=1\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" width=\"640\" height=\"352\" data-attachment-id=\"10520\" data-permalink=\"https:\/\/www.sigterritoires.fr\/index.php\/comment-faire-un-profil-topographique-avec-qgis-3-26-1ere-partie\/a13-3\/\" data-orig-file=\"https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a13.png?fit=2957%2C1625&amp;ssl=1\" data-orig-size=\"2957,1625\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;}\" data-image-title=\"a13\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a13.png?fit=640%2C352&amp;ssl=1\" src=\"https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a13.png?resize=640%2C352&#038;ssl=1\" alt=\"\" class=\"wp-image-10520\" srcset=\"https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a13.png?resize=1024%2C563&amp;ssl=1 1024w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a13.png?resize=300%2C165&amp;ssl=1 300w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a13.png?resize=768%2C422&amp;ssl=1 768w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a13.png?resize=1536%2C844&amp;ssl=1 1536w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a13.png?resize=2048%2C1125&amp;ssl=1 2048w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a13.png?resize=150%2C82&amp;ssl=1 150w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a13.png?resize=250%2C137&amp;ssl=1 250w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a13.png?w=1280&amp;ssl=1 1280w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a13.png?w=1920&amp;ssl=1 1920w\" sizes=\"auto, (max-width: 640px) 100vw, 640px\" \/><\/a><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">The two windows are dynamically linked. This also applies to symbology. The color of the profile points results from the color of the lines in the map window. If we change the contour line colors, we&rsquo;ll see the same changes in the profile points.<\/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\/a14.jpg?ssl=1\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" width=\"640\" height=\"319\" data-attachment-id=\"10521\" data-permalink=\"https:\/\/www.sigterritoires.fr\/index.php\/comment-faire-un-profil-topographique-avec-qgis-3-26-1ere-partie\/a14-4\/\" data-orig-file=\"https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a14.jpg?fit=2259%2C1127&amp;ssl=1\" data-orig-size=\"2259,1127\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;}\" data-image-title=\"a14\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a14.jpg?fit=640%2C319&amp;ssl=1\" src=\"https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a14.jpg?resize=640%2C319&#038;ssl=1\" alt=\"\" class=\"wp-image-10521\" srcset=\"https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a14.jpg?resize=1024%2C511&amp;ssl=1 1024w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a14.jpg?resize=300%2C150&amp;ssl=1 300w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a14.jpg?resize=768%2C383&amp;ssl=1 768w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a14.jpg?resize=1536%2C766&amp;ssl=1 1536w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a14.jpg?resize=2048%2C1022&amp;ssl=1 2048w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a14.jpg?resize=150%2C75&amp;ssl=1 150w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a14.jpg?resize=250%2C125&amp;ssl=1 250w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a14.jpg?w=1280&amp;ssl=1 1280w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a14.jpg?w=1920&amp;ssl=1 1920w\" sizes=\"auto, (max-width: 640px) 100vw, 640px\" \/><\/a><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">But there are also some profile-specific formatting options.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">You can display a continuous line instead of profile points: <strong><em>Properties-&gt; Elevation<\/em><\/strong>, then <strong><em>Interpretation -&gt; Continuous surface.<\/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\/a15-scaled.jpg?ssl=1\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" width=\"640\" height=\"277\" data-attachment-id=\"10522\" data-permalink=\"https:\/\/www.sigterritoires.fr\/index.php\/comment-faire-un-profil-topographique-avec-qgis-3-26-1ere-partie\/a15-3\/\" data-orig-file=\"https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a15-scaled.jpg?fit=2560%2C1108&amp;ssl=1\" data-orig-size=\"2560,1108\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;}\" data-image-title=\"a15\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a15-scaled.jpg?fit=640%2C277&amp;ssl=1\" src=\"https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a15.jpg?resize=640%2C277&#038;ssl=1\" alt=\"\" class=\"wp-image-10522\" srcset=\"https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a15-scaled.jpg?resize=1024%2C443&amp;ssl=1 1024w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a15-scaled.jpg?resize=300%2C130&amp;ssl=1 300w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a15-scaled.jpg?resize=768%2C332&amp;ssl=1 768w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a15-scaled.jpg?resize=1536%2C665&amp;ssl=1 1536w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a15-scaled.jpg?resize=2048%2C886&amp;ssl=1 2048w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a15-scaled.jpg?resize=150%2C65&amp;ssl=1 150w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a15-scaled.jpg?resize=250%2C108&amp;ssl=1 250w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a15-scaled.jpg?w=1280&amp;ssl=1 1280w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a15-scaled.jpg?w=1920&amp;ssl=1 1920w\" sizes=\"auto, (max-width: 640px) 100vw, 640px\" \/><\/a><\/figure>\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\/a16.png?ssl=1\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" width=\"640\" height=\"261\" data-attachment-id=\"10523\" data-permalink=\"https:\/\/www.sigterritoires.fr\/index.php\/comment-faire-un-profil-topographique-avec-qgis-3-26-1ere-partie\/a16-3\/\" data-orig-file=\"https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a16.png?fit=2255%2C919&amp;ssl=1\" data-orig-size=\"2255,919\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;}\" data-image-title=\"a16\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a16.png?fit=640%2C261&amp;ssl=1\" src=\"https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a16.png?resize=640%2C261&#038;ssl=1\" alt=\"\" class=\"wp-image-10523\" srcset=\"https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a16.png?resize=1024%2C417&amp;ssl=1 1024w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a16.png?resize=300%2C122&amp;ssl=1 300w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a16.png?resize=768%2C313&amp;ssl=1 768w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a16.png?resize=1536%2C626&amp;ssl=1 1536w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a16.png?resize=2048%2C835&amp;ssl=1 2048w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a16.png?resize=150%2C61&amp;ssl=1 150w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a16.png?resize=250%2C102&amp;ssl=1 250w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a16.png?w=1280&amp;ssl=1 1280w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a16.png?w=1920&amp;ssl=1 1920w\" sizes=\"auto, (max-width: 640px) 100vw, 640px\" \/><\/a><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Or you can have a full profile: <strong><em>STYLE-&gt; Fill in below<\/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\/a17.png?ssl=1\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" width=\"640\" height=\"228\" data-attachment-id=\"10524\" data-permalink=\"https:\/\/www.sigterritoires.fr\/index.php\/comment-faire-un-profil-topographique-avec-qgis-3-26-1ere-partie\/a17-3\/\" data-orig-file=\"https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a17.png?fit=2485%2C885&amp;ssl=1\" data-orig-size=\"2485,885\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;}\" data-image-title=\"a17\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a17.png?fit=640%2C228&amp;ssl=1\" src=\"https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a17.png?resize=640%2C228&#038;ssl=1\" alt=\"\" class=\"wp-image-10524\" srcset=\"https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a17.png?resize=1024%2C365&amp;ssl=1 1024w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a17.png?resize=300%2C107&amp;ssl=1 300w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a17.png?resize=768%2C274&amp;ssl=1 768w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a17.png?resize=1536%2C547&amp;ssl=1 1536w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a17.png?resize=2048%2C729&amp;ssl=1 2048w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a17.png?resize=150%2C53&amp;ssl=1 150w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a17.png?resize=250%2C89&amp;ssl=1 250w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a17.png?w=1280&amp;ssl=1 1280w, https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a17.png?w=1920&amp;ssl=1 1920w\" sizes=\"auto, (max-width: 640px) 100vw, 640px\" \/><\/a><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">The result is<\/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\/a18-1.png?ssl=1\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" width=\"640\" height=\"279\" data-attachment-id=\"10525\" data-permalink=\"https:\/\/www.sigterritoires.fr\/index.php\/comment-faire-un-profil-topographique-avec-qgis-3-26-1ere-partie\/a18-1\/\" data-orig-file=\"https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a18-1.png?fit=2309%2C1009&amp;ssl=1\" data-orig-size=\"2309,1009\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;}\" data-image-title=\"a18-1\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a18-1.png?fit=640%2C279&amp;ssl=1\" src=\"https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a18-1.png?resize=640%2C279&#038;ssl=1\" alt=\"\" class=\"wp-image-10525\" srcset=\"https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2023\/05\/a18-1.png?resize=1024%2C447&amp;ssl=1 1024w, 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