NIM087432 for ArcGIS for Desktop

Bug ID Number	NIM087432
Submitted	December 17, 2012
Last Modified	April 28, 2025
Applies to	ArcGIS for Desktop
Version found	10.1
Operating System	Windows OS
Operating System Version	7
Status	Will Not Be Addressed

Additional Information

LAS Dataset is not able to read the linear unit geo-key in the LAS file. Please refer to the workaround.

Workaround

Use a filter to "remove_all_vlrs" with LASTools or other program to convert the LAS file. Note from Raghav (8/26/2013):When a LAS file is being rejected by the LAS Dataset, you can inspect the LAS file for correctness using a utility called CheckLAS:<a href="http://www.arcgis.com/home/item.html?id=e49eaa594fb04f7f8827915345a255aa" target="_blank">http://www.arcgis.com/home/item.html?id=e49eaa594fb04f7f8827915345a255aa</a>It appears that the LAS Dataset "Failed to read LAS linear unit geo-key" from the LAS file. It is not uncommon that LAS files may have incorrect or sometimes incomplete geo-ref information in them. The reason it worked in a previous release is because our validation of geo-reference information was not very robust before. And Mosaic dataset is perhaps not doing the same strict validations as the LAS Dataset.There are two workarounds:1) Add a .prj file next to the LAS file to override the geo-ref information in the LAS file.2) Rewrite the LAS file with correct geo-referencing information.Please refer to these custom tools on the resource center:<a href="http://www.arcgis.com/home/item.html?id=d8782286e3c9442bb5c244bf39da5966" target="_blank">http://www.arcgis.com/home/item.html?id=d8782286e3c9442bb5c244bf39da5966</a><a href="http://www.arcgis.com/home/item.html?id=20ad599285184fe28594b617dc399b87" target="_blank">http://www.arcgis.com/home/item.html?id=20ad599285184fe28594b617dc399b87</a>