[pdal] Trouble reading some 3DEP tiles in PDAL

Jim Klassen klassen.js at gmail.com
Mon Dec 2 21:05:02 PST 2024


Closing the loop on this one.  The USGS was able to correct the bad 3DEP tiles.  Thanks for the help diagnosing the issue.

On 9/12/24 10:14, Andrew Bell wrote:
> lasinfo reports more information on these, but PDAL is correctly
> telling you what is wrong.
>
> On Thu, Sep 12, 2024 at 11:11 AM Andrew Bell <andrew.bell.ia at gmail.com> wrote:
>> I believe that PDAL is correctly reporting these files as invalid.
>>
>> On Wed, Sep 11, 2024 at 3:00 PM Jim Klassen via pdal
>> <pdal at lists.osgeo.org> wrote:
>>> I'm getting errors reading some 3DEP tiles with "pdal info".  There are several of each type, but this is trimmed to one example of each.  My main question is if these are invalid LAZ files and/or is there an issue with the PDAL LAZ reader.   Tried with pdal 2.7.1 and 2.8.0.
>>>
>>> USGS_LPC_MN_BeckerCounty_2021_D21_264_5209.laz :  PDAL: readers.las: Extra byte specification exceeds point length beyond base format length.
>>> USGS_LPC_MN_BeckerCounty_2021_D21_265_5209.laz :  PDAL: readers.las: Invalid file signature. Was expecting 'LASF', Check the first four bytes of the file.   (this one looks corrupt)
>>> USGS_LPC_MN_SE_Driftless_2021_B21_4195_49005.laz :  PDAL: readers.las: Invalid version 1468 found in LAZ chunk table.
>>> USGS_LPC_MN_SE_Driftless_2021_B21_448_______________________________________________
>>> pdal mailing list
>>> pdal at lists.osgeo.org
>>> https://lists.osgeo.org/mailman/listinfo/pdal
>>>
>>>
>>> --
>>> Andrew Bell
>>> andrew.bell.ia at gmail.com
>>>
>>> 0_49125.laz :  PDAL: readers.las: Invalid version 1464 found in LAZ chunk table.
>>>
>>> Source Files:
>>> https://rockyweb.usgs.gov/vdelivery/Datasets/Staged/Elevation/LPC/Projects/MN_BeckerCounty_2021_D21/MN_BeckerCo_1_2021/LAZ/USGS_LPC_MN_BeckerCounty_2021_D21_264_5209.laz
>>>
>>> https://rockyweb.usgs.gov/vdelivery/Datasets/Staged/Elevation/LPC/Projects/MN_BeckerCounty_2021_D21/MN_BeckerCo_1_2021/LAZ/USGS_LPC_MN_BeckerCounty_2021_D21_265_5209.laz
>>>
>>> https://rockyweb.usgs.gov/vdelivery/Datasets/Staged/Elevation/LPC/Projects/MN_SE_Driftless_2021_B21/MN_SEDriftless_5_2021/LAZ/USGS_LPC_MN_SE_Driftless_2021_B21_4195_49005.laz
>>>
>>> https://rockyweb.usgs.gov/vdelivery/Datasets/Staged/Elevation/LPC/Projects/MN_SE_Driftless_2021_B21/MN_SEDriftless_5_2021/LAZ/USGS_LPC_MN_SE_Driftless_2021_B21_4480_49125.laz
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>>> pdal at lists.osgeo.org
>>> https://lists.osgeo.org/mailman/listinfo/pdal
>>
>>
>> --
>> Andrew Bell
>> andrew.bell.ia at gmail.com
>
>



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