1. Geoprocessing Sample Tools for Lidar
Clayton Crawford
Esri Corporate Template-Dark v3.3
16:9 version – January 21, 2016
For more templates, sample files, and icons, see
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2. Content Discuss and demonstrate 3D Sample Tools for lidar
Implemented as custom GP tools
Prototypes and utilities
Often make their way into shipping product
Available for download
Easy to install and use

3. Locating 3D Sample Tools

4. 3D Sample Tools Web Page

5. 3D Sample Tools Conversion Analysis Classification Management
Vegetation

6. Installer Download contains executable to perform installation
Works for ArcGIS Desktop versions 10.2 – 10.4

7. Toolbox location
Placed under Toolboxes in ArcCatalog

8. LAS File Information LAS file version, point format Num points
XYZ extent
Spatial reference
Returns
Class codes
Etc.
Written to text file next to LAS

9. Create PRJ For LAS Add or override spatial reference for LAS files
Creates sidecar PRJ
Similar to shapefile or image
Easily create multiple PRJ for folder full of LAS

10. Classify LAS Overlap Points
Finds points in overlap areas of flightline swaths in aerial lidar
Requires Point Source ID, representing flightline number, to have been set by the data provider
Points with larger scan angles in areas of overlap will be classified as overlap. Thus higher accuracy points are preserved.

11. LAS Building Polygon
Works on lidar with building/rooftop points classified
Finds ‘clusters’ of building points and aggregates them into polygons

12. Canopy Peaks
Uses a raster Canopy Height Model (CHM) as input. This is same as a normalized DEM (nDEM).
Finds local highs based on areas that vary in size based on height. Assumption is the taller the tree, the wider its crown.
Works best for coniferous forest where trees have more clearly defined peaks

13. Updates in Pro and other ArcGIS Apps
Create PRJ For LAS is option on Create LAS Dataset tool
LAS To LAS is available as Extract LAS
Enhanced to support irregular clip boundary polygon
Rearrange LAS is option on Extract LAS tool
Classify LAS By Height, Locate LAS By Proximity, LAS Point Statistics By Area added to Pro 1.0 and ArcGIS
Classify LAS Ground in Pro 1.2 and ArcGIS 10.4

14. Thank You!
Clayton Crawford

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