site<\/a><\/p>\n Points2Grid is used as the default DEM generation algorithm for the OpenTopography point cloud processing system<\/a><\/p>\n here is how-to install and use.<\/p>\n This shoud write down the full help message<\/p>\n as output, one can get, Oh Miracle!, the following calculation in asc or grid format :<\/p>\n –min\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0the\u00a0Zmin\u00a0values\u00a0are\u00a0stored <\/p>\n","protected":false},"excerpt":{"rendered":" Points2Grid : A Local Gridding Method for DEM Generation from Lidar Point Cloud Data site Points2Grid is used as the default DEM generation algorithm for the OpenTopography point cloud processing system here is how-to install and use. Install be sure to have Linux, or to install Linux under Windows => https:\/\/docs.microsoft.com\/fr-fr\/windows\/wsl\/install-win10 install following libraries : … Continue reading “Points2Grid”<\/span><\/a><\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[9],"tags":[],"class_list":["post-60","post","type-post","status-publish","format-standard","hentry","category-lidar"],"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/sigeo.cerege.fr\/index.php?rest_route=\/wp\/v2\/posts\/60","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/sigeo.cerege.fr\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/sigeo.cerege.fr\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/sigeo.cerege.fr\/index.php?rest_route=\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/sigeo.cerege.fr\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=60"}],"version-history":[{"count":7,"href":"https:\/\/sigeo.cerege.fr\/index.php?rest_route=\/wp\/v2\/posts\/60\/revisions"}],"predecessor-version":[{"id":528,"href":"https:\/\/sigeo.cerege.fr\/index.php?rest_route=\/wp\/v2\/posts\/60\/revisions\/528"}],"wp:attachment":[{"href":"https:\/\/sigeo.cerege.fr\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=60"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/sigeo.cerege.fr\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=60"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/sigeo.cerege.fr\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=60"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}Install<\/h2>\n
\n
<\/code><\/li>\n<\/ul>\nsudo apt-get update<\/code><\/p>\nsudo apt-get install build-essential gdal-bin libcurl4-gnutls-dev libbz2-dev libboost-all-dev\u00a0\u00a0<\/code><\/p>\n\n
<\/code><\/li>\n<\/ul>\n
\nsudo\u00a0mkdir\u00a0build<\/code>
\ncd\u00a0build<\/code>sudo cmake ..<\/code> \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0#check no error message in this step and followingssudo\u00a0make<\/code>sudo\u00a0make\u00a0install<\/code><\/p>\n\n
export PATH=$PATH:\/usr\/local\/bin
LD_LIBRARY_PATH=\/usr\/local\/lib
export LD_LIBRARY_PATH<\/code><\/p>\n\n
.\/points2grid --help<\/code><\/p>\nUse<\/h2>\n
\n
LAStools\\bin\\las2las -i .\\20200311_MA_GCP12.laz -o .\\20200311_MA_GCP12.las<\/code><\/li>\n.\/points2grid -i \u00a0\/path_to_input\/20200311_MA_GCP12.las \u00a0-o \/path_to_output -r 0.0707 --input_format las --all --resolution 0.1 --fill<\/code><\/p>\n\n
\n
<\/code>options :
-r : search radius, which usually is calculated as : resolution*sqrt(2)\/2
–fill : fill empty cells using a 3×3 window
–all : all the possible calculation are made (see below)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n
–max\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0the\u00a0Zmax\u00a0values\u00a0are\u00a0stored
–mean\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0the\u00a0Zmean\u00a0values\u00a0are\u00a0stored
–idw\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0the\u00a0Zidw\u00a0values\u00a0are\u00a0stored
–std\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0the\u00a0Zstd\u00a0values\u00a0are\u00a0stored
–den\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0the\u00a0density\u00a0values\u00a0are\u00a0stored
–all\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0all\u00a0the\u00a0values\u00a0are\u00a0stored\u00a0(default)<\/p>\n\n\n