https://community.esri.com/t5/arcgis-pro-questions/problem-reclassifying-las-data-in-arcgis-pro/m-p/1239358#M63200 <P>I am having trouble with the Classify LAS Ground tool in the 3D Analyst Toolset. I downloaded LAZ files from the USGS national map downloader and brought them into ArcGIS Pro. I used laszip to uncompress the LAZ files into LAS.</P><P>In my experience prior, the LAS files come classified already. When I load all of the LAS files into a LAS dataset most of them are classified already though some of the tiles are not. Trying to remedy this I run the Classify LAS Ground tool which runs successfully but it doesn't seem to actually classify ground in the tiles that were unclassified to begin with. I have tried Aggressive, Conservative, and standard classification methods and all three have yielded the same outcome.</P><P>Hopefully I'm just missing something.</P><P>I've included some pictures to try to help make it more clear. The first shows one of the tiles where every LAS point is unclassified and part of a neighboring tile with classified points. The second shows that I have all classification codes active. The third shows the Classify LAS Ground tool having succeeded but the points still not being classified as ground.</P> Thu, 08 Dec 2022 20:19:52 GMT PueblodeSanIldefonsoGIS 2022-12-08T20:19:52Z https://community.esri.com/t5/arcgis-pro-questions/problem-reclassifying-las-data-in-arcgis-pro/m-p/1239358#M63200 <P>I am having trouble with the Classify LAS Ground tool in the 3D Analyst Toolset. I downloaded LAZ files from the USGS national map downloader and brought them into ArcGIS Pro. I used laszip to uncompress the LAZ files into LAS.</P><P>In my experience prior, the LAS files come classified already. When I load all of the LAS files into a LAS dataset most of them are classified already though some of the tiles are not. Trying to remedy this I run the Classify LAS Ground tool which runs successfully but it doesn't seem to actually classify ground in the tiles that were unclassified to begin with. I have tried Aggressive, Conservative, and standard classification methods and all three have yielded the same outcome.</P><P>Hopefully I'm just missing something.</P><P>I've included some pictures to try to help make it more clear. The first shows one of the tiles where every LAS point is unclassified and part of a neighboring tile with classified points. The second shows that I have all classification codes active. The third shows the Classify LAS Ground tool having succeeded but the points still not being classified as ground.</P> Thu, 08 Dec 2022 20:19:52 GMT https://community.esri.com/t5/arcgis-pro-questions/problem-reclassifying-las-data-in-arcgis-pro/m-p/1239358#M63200 PueblodeSanIldefonsoGIS 2022-12-08T20:19:52Z