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Error importing Lidar laz file

  • 1.  Error importing Lidar laz file

    Posted 09-23-2020 06:04

    Dropbox - usgs18-70cm_14RMU995660.laz - Simplify your life 


    Trying to import a laz file into TBC 5.32, but keep getting this error:



    It imports into Autodesk Recap just fine and I can export an e57 file and bring into TBC without any issues. I have checked several lidar files from the same source (TNRIS) and I get the error on the newer lidar's (2019) and not the old ones (2015). I know the old point clouds are version 1.2 and the new ones are 1.4. Does TBC not know how to handle the newest version of las/laz?


    I also checked the file on 5.30 and get the same error.



  • 2.  Re: Error importing Lidar laz file

    Posted 09-25-2020 05:29

    Has no one else seen this problem?

  • 3.  Re: Error importing Lidar laz file

    Posted 09-26-2020 07:47


    I am trying to find out what version of LAS and LAZ files we are supporting currently. It could well be that a Version Update has occurred that is not yet supported in TBC.



  • 4.  Re: Error importing Lidar laz file

    Posted 09-28-2020 11:05

    Thank you for the reply Alan



  • 5.  RE: Re: Error importing Lidar laz file

    Posted 03-17-2021 06:07

    Have you found out why we can't import this version of LAZ/LAS?

    Thomas Tomsu

  • 6.  RE: Error importing Lidar laz file

    Posted 03-18-2021 07:25

    You need to unzip the LAZ and convert it to a LAS file, there are free programs available online like the one pictured above.

    It is a bit clunky but it does work once you figure it out.

    Hope this helps.

    John Whidden

  • 7.  RE: Error importing Lidar laz file

    Posted 03-19-2021 08:29
    Edited by Dave Olander 03-19-2021 08:29
    If there is a version problem, I think you can use las2las.exe to modify the files. las2las.exe and laszip.exe were my 2 favorite applications in the LAS Tools suite. When exporting scan data, I intentionally kept my versions lower so that I didn't encounter compatibility issues. Generally, I stuck to version 1.1 or 1.2, depending upon whether I had RGB included. I never used them to convert from one version to another, but I'm pretty sure it can do that. Also, the GUI is shown above, but I preferred to use the command line.

    laz is a very effective format to store and use lidar/scan files. The .laz file is about 1/7 the size of the .las file it was created from and because these data sets tend to be very large, it equates to a significant reduction in storage required and download times. Most software can use .laz natively. I found that in using RiProcess, TBC, Microstation/TopoDOT and Civil3D, that there was rarely a reason to convert back to .las.

    Dave Olander

  • 8.  RE: Error importing Lidar laz file

    Posted 03-19-2021 11:33
    Thank you John for the info.

    I was just wandering when TBC could import these files as-is like other software can without having to convert them.

    Thomas Tomsu