Latest Contributions by JieChang

‎02-18-2026

Thank you for reporting this. We have not observed any general degradation in the ground classification quality in 3.6. We have implemented enhancements to improve classification performance, particularly for dense photogrammetric point clouds. However, these updates may influence results for certain datasets. To help us investigate, could you please provide the following information? - A sample dataset so we can attempt to reproduce the issue - The exact tool settings used - A comparison of the results between the previous version and 3.6 (screenshots or statistics would be helpful) Thank you.

‎06-24-2013

This cannot be accomplished at ArcGIS. However, you can use lasclip to do it. http://www.cs.unc.edu/~isenburg/lastools/ - Jie

‎03-28-2012

http://help.arcgis.com/en/arcgisdesktop/10.0/help/index.html#//009z000000vm000000.htm - Jie

‎12-20-2011

You can directly create raster using the points with the interpolation tools.

‎12-13-2011

The output of the 'ASCII 3D to Feture' tool (Output Feature Class Type: POINT) is a 3D feature class and contains Z information. Run the Add XY Coordinates tool (Data Management Tools > Features) and the Z values will be added into the attribute table.

‎11-23-2011

Hi Rebecca, First use the "Zonal Statistics as Table" tool (Spatial Analyst Tools > Zonal) and select Maximum as the Statistics type. Then join the polygon file with the generated table.

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Date Last Visited	‎05-20-2026 11:52 AM

My Ideas

Latest Contributions by JieChang

Re: Lidar ground classification in versions 3.3-3.6 is worse than in 3.2

Re: Clip Lidar data and export las

Re: Z factor in ASCII 3D to Feature Class

Re: How to process .XYZ format data

Re: How to process .XYZ format data

Re: Extracting Raster Data to Polygons

Re: Clip Lidar data and export las