Point Cloud Options

Points clouds are a category of GIS data.  This forms allow manipulation of the LAS point cloud.

Tabs provided detailed option selection:
Main controls on the bottom of the form, always visible:
  General tab. 

Thinning for OpenGL, and slices

KML vertical offset, to put the points above the landscape. 

Files list tab.  List of files to be used.
  • LIB Add all indexed files from Map library included on this map. Auto load from the Map library set on the Indexes tab of the options form, automatically adds files when the form opens.
  • Metadata: Display Metadata for the files. If there are a lot of files, you probably only want to look at a few.
  • Outline tiles on the current map
  • Zoom: restrict map to just area covered by the point cloud.
  • On Map: do not open tiles that are not on the map.  If you zoom out, they will not automatically appear.
  • Zoom to cloud: if set, the map will zoom to the area covered by the first point cloud you load
    • If you are not sure of the are covered by the point, this is a fast way to get to the region and explore the date.
    • If you will load  multiple clouds, and the later clouds might not cover the same area, you probably do you not want this option.
  • Label: Label the tiles.  You might have to adjust the map colors to see them.
  • Add #1, #2, #3, #4 Pick individual files/directories to included.  You can open multiple point clouds, and turn them on and off rapidly.
Tools tabMany of these options require that the base map in use have a DEM associated with it, which will determine the size of the grid created.

Stats tab:

  • Histograms/Counts: histograms for elevation and intensity, and a count of the returns in each category, and by return number.
  • Zero classification: merge all LAS files in the current files listing into a single file, with the classifications all reset to zero.
  • RGB Palette:
  • Split by class: create new files by classification (vegetation, buildings, ground, non_ground, unclassified, and other)
  • Recenter files: recenter all coordinates so that multiple files share the same values.  This is designed for use with Cloud Compare, and not at this time to create usable LAS files for further analysis.
  • Subset/tile: recursively quarter files until all file sizes are under a specified value;
  • Zero fields : set the following fields to zero: Intensity, ReturnFlags, ScanAngle, UserData, PointSourceID

Compare two point clouds

Other Point Cloud Viewers and Lidar tools

Lidar Point Cloud Data Sources

File prep and work flow to create grids

Problems with point clouds

Last revision 4/10/2018