topic Re: Calculate Elevation and Area from LIDAR data in 3D Questions https://community.esri.com/t5/3d-questions/calculate-elevation-and-area-from-lidar-data/m-p/456896#M2758 <HTML><HEAD></HEAD><BODY><P>Is the issue that you don't trust the building footprints (i.e. you want to re-delineate the buildings)? If not, you shouldn't have to do much with the "LiDAR" side of things, and you can move on <A href="http://resources.arcgis.com/en/help/main/10.2/index.html#/Minus/009z00000093000000/">subtracting</A> the DSM and DTM rasters in conjunction with <A href="http://resources.arcgis.com/en/help/main/10.2/index.html#/Extract_by_Mask/009z0000002n000000/">Extract by Mask</A>​ (requires Spatial Analyst).</P></BODY></HTML> Mon, 21 Dec 2015 19:05:18 GMT DarrenWiens2 2015-12-21T19:05:18Z Calculate Elevation and Area from LIDAR data https://community.esri.com/t5/3d-questions/calculate-elevation-and-area-from-lidar-data/m-p/456894#M2756 <HTML><HEAD></HEAD><BODY><P>Hi I have the following datasets for an area:</P><P>1. LIDAR DTM (Digital Terrain Model)</P><P>2. LIDAR DSM (Digital Surface Model)</P><P>3. Building footprints polygons</P><P></P><P>I would like to calculate the following:</P><P>1. Maximum height of each building footprint</P><P>(by subtracting DTM from DSM)</P><P></P><P>2. Area of each individual section of a footprint </P><P>(by overlay the DSM over the building footprint and delineate the individual boundaries of a footprint</P><P>based on the LIDAR classification)</P><P></P><P>Any ideas whether 1) and 2) can be done using ArcGIS or any of its extensions (3D or Spatial Analyst)?</P><P></P><P></P><P>Thanks</P></BODY></HTML> Mon, 21 Dec 2015 15:16:43 GMT https://community.esri.com/t5/3d-questions/calculate-elevation-and-area-from-lidar-data/m-p/456894#M2756 RaoBase 2015-12-21T15:16:43Z Re: Calculate Elevation and Area from LIDAR data https://community.esri.com/t5/3d-questions/calculate-elevation-and-area-from-lidar-data/m-p/456895#M2757 <HTML><HEAD></HEAD><BODY><P>relevent help topics</P><P><A href="http://desktop.arcgis.com/en/desktop/latest/manage-data/las-dataset/using-lidar-in-arcgis.htm" title="http://desktop.arcgis.com/en/desktop/latest/manage-data/las-dataset/using-lidar-in-arcgis.htm">Using lidar in ArcGIS—Help | ArcGIS for Desktop</A></P><P> <A href="http://desktop.arcgis.com/en/desktop/latest/tools/data-management-toolbox/an-overview-of-the-las-dataset-toolset.htm" title="http://desktop.arcgis.com/en/desktop/latest/tools/data-management-toolbox/an-overview-of-the-las-dataset-toolset.htm">An overview of the LAS Dataset toolset—Help | ArcGIS for Desktop</A> </P><P><A href="http://desktop.arcgis.com/en/desktop/latest/tools/spatial-analyst-toolbox/an-overview-of-the-spatial-analyst-toolbox.htm" title="http://desktop.arcgis.com/en/desktop/latest/tools/spatial-analyst-toolbox/an-overview-of-the-spatial-analyst-toolbox.htm">An overview of the Spatial Analyst Toolbox—Help | ArcGIS for Desktop</A></P><P> <A href="http://desktop.arcgis.com/en/desktop/latest/tools/3d-analyst-toolbox/an-overview-of-the-3d-analyst-toolbox.htm" title="http://desktop.arcgis.com/en/desktop/latest/tools/3d-analyst-toolbox/an-overview-of-the-3d-analyst-toolbox.htm">An overview of the 3D Analyst toolbox—Help | ArcGIS for Desktop</A> </P><P>Pretty well need one or the other extension to be useful</P></BODY></HTML> Mon, 21 Dec 2015 16:49:37 GMT https://community.esri.com/t5/3d-questions/calculate-elevation-and-area-from-lidar-data/m-p/456895#M2757 DanPatterson_Retired 2015-12-21T16:49:37Z Re: Calculate Elevation and Area from LIDAR data https://community.esri.com/t5/3d-questions/calculate-elevation-and-area-from-lidar-data/m-p/456896#M2758 <HTML><HEAD></HEAD><BODY><P>Is the issue that you don't trust the building footprints (i.e. you want to re-delineate the buildings)? If not, you shouldn't have to do much with the "LiDAR" side of things, and you can move on <A href="http://resources.arcgis.com/en/help/main/10.2/index.html#/Minus/009z00000093000000/">subtracting</A> the DSM and DTM rasters in conjunction with <A href="http://resources.arcgis.com/en/help/main/10.2/index.html#/Extract_by_Mask/009z0000002n000000/">Extract by Mask</A>​ (requires Spatial Analyst).</P></BODY></HTML> Mon, 21 Dec 2015 19:05:18 GMT https://community.esri.com/t5/3d-questions/calculate-elevation-and-area-from-lidar-data/m-p/456896#M2758 DarrenWiens2 2015-12-21T19:05:18Z Re: Calculate Elevation and Area from LIDAR data https://community.esri.com/t5/3d-questions/calculate-elevation-and-area-from-lidar-data/m-p/456897#M2759 <HTML><HEAD></HEAD><BODY><P>Thanks for the suggestion using Spatial Analyst for deriving height from DSM and DTM.</P><P></P><P>The reason for delineating the building footprints is to obtain the area for each floor of the the building. </P></BODY></HTML> Mon, 21 Dec 2015 20:14:47 GMT https://community.esri.com/t5/3d-questions/calculate-elevation-and-area-from-lidar-data/m-p/456897#M2759 RaoBase 2015-12-21T20:14:47Z Re: Calculate Elevation and Area from LIDAR data https://community.esri.com/t5/3d-questions/calculate-elevation-and-area-from-lidar-data/m-p/456898#M2760 <HTML><HEAD></HEAD><BODY><P>Hello Rao,</P><P></P><P>Have you seen Geoff Taylor's blog on this at <A href="https://community.esri.com/migration-blogpost/55437">Create Floors from 3D Building Models</A>?</P><P></P><P>Arthur Crawford</P></BODY></HTML> Wed, 24 Feb 2016 19:00:46 GMT https://community.esri.com/t5/3d-questions/calculate-elevation-and-area-from-lidar-data/m-p/456898#M2760 ArthurCrawford 2016-02-24T19:00:46Z