{"id":19081,"date":"2024-05-30T10:52:07","date_gmt":"2024-05-30T14:52:07","guid":{"rendered":"https:\/\/www.outragegis.com\/trails\/?p=19081"},"modified":"2025-07-30T22:28:39","modified_gmt":"2025-07-31T02:28:39","slug":"terrain-explorer","status":"publish","type":"post","link":"https:\/\/www.outragegis.com\/trails\/2024\/05\/30\/terrain-explorer\/","title":{"rendered":"Terrain Explorer"},"content":{"rendered":"\n

In this web map, we explore how to use different elevation models in 3D maps. The KyFromAbove<\/a> project collects and maintains high-resolution elevation data and aerial imagery for Kentucky. The bare-earth Digital Elevation Model (DEM) was created from a lidar point cloud. This is the typical elevation model that we use. The same point cloud was then filtered to create a Digital Surface Model (DSM) showing above-ground elevations, like buildings and trees. Both of these elevation models were converted to terrain tiles to use in web mapping applications. MapLibre GL JS 3D features terrain rendering with\u00a0RGB-encoded elevation raster tiles<\/a>.<\/p>\n\n\n\n

\"Terrain
Explore different terrain models at outragegis.com\/terrain-explorer\/<\/a><\/figcaption><\/figure>\n\n\n\n

The sliders allow the viewer to change the vertical exaggeration of the DEM and DSM. If geolocation is enabled, a track will record the viewer’s location. That track can be downloaded as a GeoJSON (works in Chrome).<\/p>\n\n\n\n

Visit the page: outragegis.com\/terrain-explorer\/<\/a><\/p>\n\n\n\n

This was a project in the UKy Geography MAP 675, a course in the department’s Digital Mapping MS graduate program. The aerial imagery and elevation data are from 2019.<\/p>\n","protected":false},"excerpt":{"rendered":"

In this web map, we explore how to use different elevation models in 3D maps. The KyFromAbove project collects and maintains high-resolution elevation data and aerial imagery for Kentucky. The bare-earth Digital Elevation Model (DEM) was created from a lidar point cloud. This is the typical elevation model that we use. The same point cloud […]<\/p>\n","protected":false},"author":3,"featured_media":19080,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[55,24,80,23],"tags":[64,65],"class_list":["post-19081","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-class-maps","category-free-maps","category-kyfromabove","category-maps","tag-lidar","tag-point-clouds","entry"],"_links":{"self":[{"href":"https:\/\/www.outragegis.com\/trails\/wp-json\/wp\/v2\/posts\/19081","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.outragegis.com\/trails\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.outragegis.com\/trails\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.outragegis.com\/trails\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/www.outragegis.com\/trails\/wp-json\/wp\/v2\/comments?post=19081"}],"version-history":[{"count":2,"href":"https:\/\/www.outragegis.com\/trails\/wp-json\/wp\/v2\/posts\/19081\/revisions"}],"predecessor-version":[{"id":19083,"href":"https:\/\/www.outragegis.com\/trails\/wp-json\/wp\/v2\/posts\/19081\/revisions\/19083"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.outragegis.com\/trails\/wp-json\/wp\/v2\/media\/19080"}],"wp:attachment":[{"href":"https:\/\/www.outragegis.com\/trails\/wp-json\/wp\/v2\/media?parent=19081"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.outragegis.com\/trails\/wp-json\/wp\/v2\/categories?post=19081"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.outragegis.com\/trails\/wp-json\/wp\/v2\/tags?post=19081"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}