[pdal] [EXTERNAL] Re: reader.ept error - Could read from

Howard Butler howard at hobu.co
Mon Jul 8 05:25:14 PDT 2024


set VERBOSE=1 in your environment before running your pipeline and include the --debug switch in your pdal command to see if it will emit more diagnostic for you.

> On Jul 8, 2024, at 7:05 AM, Pearson, Scott via pdal <pdal at lists.osgeo.org> wrote:
> 
> Hi Kirk,
>  
> I have seen the problem consistently since July 1 and again this morning.  I use a PC that is on my employer’s VPN, which might be contributing to the issue.
>  
> Scott
>  
> From: Kirk Waters - NOAA Federal <kirk.waters at noaa.gov>
> Sent: Monday, July 8, 2024 7:35 AM
> To: Pearson, Scott <pearsonsm at ornl.gov>
> Cc: Paul Harwood <runette at gmail.com>; pdal at lists.osgeo.org
> Subject: Re: [pdal] [EXTERNAL] Re: reader.ept error - Could read from
>  
> I've seen this error message before with other files. When I pulled the ept.json file to verify, it looked fine. Rerunning the command also worked fine. This has made me believe it's been a network issue. For my automated processes, I now try to catch that response, sleep a minute, and then try again. Has it been consistently failing?
> 
> Kirk Waters, PhD 
> NOAA Office for Coastal Management
> Applied Sciences Program      
> coast.noaa.gov/digitalcoast <https://urldefense.us/v2/url?u=http-3A__coast.noaa.gov_digitalcoast&d=DwMFaQ&c=v4IIwRuZAmwupIjowmMWUmLasxPEgYsgNI-O7C4ViYc&r=HORY163nBbFgyWK0c3Xwo0vnkU1QghnN6V30DBX36lU&m=_j6WrNWoVwy77DWC5EJvBc9LKUL5lV6AlicsKukZeWnLAijORUp4Y6Y6O2QTeSFs&s=py4GkxTULW8v1KQXRdcuOrApgAtGP2DNvXXiG6LFkWU&e=>
>  
>  
>  
>  
> On Mon, Jul 8, 2024 at 7:26 AM Pearson, Scott via pdal <pdal at lists.osgeo.org <mailto:pdal at lists.osgeo.org>> wrote:
> Hi Paul,
>  
> The URL is quoted in my input JSON file.  In the email message, Microsoft Outlook converted the URL text to a link and dropped the quotes.  Here’s a snippet from the JSON with quotation marks preserved:
> {
>     "tag": "ept_reader",
>     "type": "readers.ept",
>     "bounds": "([ -9423306.45485711 , -9421847.59871605 ],[ 4175665.92739632 , 4177131.3660114 ])",
>     "filename": “https://s3-us-west-2.amazonaws.com/usgs-lidar-public/USGS_LPC_TN_27County_blk4_2015_LAS_2018/ept.json <https://urldefense.us/v2/url?u=https-3A__s3-2Dus-2Dwest-2D2.amazonaws.com_usgs-2Dlidar-2Dpublic_USGS-5FLPC-5FTN-5F27County-5Fblk4-5F2015-5FLAS-5F2018_ept.json&d=DwMFaQ&c=v4IIwRuZAmwupIjowmMWUmLasxPEgYsgNI-O7C4ViYc&r=HORY163nBbFgyWK0c3Xwo0vnkU1QghnN6V30DBX36lU&m=_j6WrNWoVwy77DWC5EJvBc9LKUL5lV6AlicsKukZeWnLAijORUp4Y6Y6O2QTeSFs&s=2fzUXpUwgQYrH-rkW6_bGLG3pgVPaUTGCCioQXewQRU&e=>”,
>     "resolution": "0.01",
>     "threads": "4"
>   }
>  
> Thanks,
> Scott
>  
>  
> From: Paul Harwood <runette at gmail.com <mailto:runette at gmail.com>>
> Sent: Saturday, July 6, 2024 5:10 AM
> To: Pearson, Scott <pearsonsm at ornl.gov <mailto:pearsonsm at ornl.gov>>
> Cc: pdal at lists.osgeo.org <mailto:pdal at lists.osgeo.org>
> Subject: [EXTERNAL] Re: [pdal] reader.ept error - Could read from
>  
> I don't know if this is just an artefact of the email - but :
>  
> https://s3-us-west-2.amazonaws.com/usgs-lidar-public/USGS_LPC_TN_27County_blk4_2015_LAS_2018/ept.json <https://urldefense.us/v2/url?u=https-3A__s3-2Dus-2Dwest-2D2.amazonaws.com_usgs-2Dlidar-2Dpublic_USGS-5FLPC-5FTN-5F27County-5Fblk4-5F2015-5FLAS-5F2018_ept.json&d=DwMFaQ&c=v4IIwRuZAmwupIjowmMWUmLasxPEgYsgNI-O7C4ViYc&r=HORY163nBbFgyWK0c3Xwo0vnkU1QghnN6V30DBX36lU&m=OdmAeyhN4J3b_xFt4WhzHNuQCyNq824pbGFV3UroI6V5tWNz16wjdyIBWpc7MUa1&s=DppyiaHKZxe-lcRF1sMm-tzX3QvrM6XUlmHN-QZEGYo&e=>
>  
> should be:
> 
> "https://s3-us-west-2.amazonaws.com/usgs-lidar-public/USGS_LPC_TN_27County_blk4_2015_LAS_2018/ept.json <https://urldefense.us/v2/url?u=https-3A__s3-2Dus-2Dwest-2D2.amazonaws.com_usgs-2Dlidar-2Dpublic_USGS-5FLPC-5FTN-5F27County-5Fblk4-5F2015-5FLAS-5F2018_ept.json&d=DwMFaQ&c=v4IIwRuZAmwupIjowmMWUmLasxPEgYsgNI-O7C4ViYc&r=HORY163nBbFgyWK0c3Xwo0vnkU1QghnN6V30DBX36lU&m=OdmAeyhN4J3b_xFt4WhzHNuQCyNq824pbGFV3UroI6V5tWNz16wjdyIBWpc7MUa1&s=DppyiaHKZxe-lcRF1sMm-tzX3QvrM6XUlmHN-QZEGYo&e=>"
>  
> On Fri, 5 Jul 2024 at 17:24, Pearson, Scott via pdal <pdal at lists.osgeo.org <mailto:pdal at lists.osgeo.org>> wrote:
> Dear PDAL folks,
>  I have an error using readers.ept in a PDAL pipeline.  Using instructions on the Quickstart page <https://urldefense.us/v2/url?u=https-3A__pdal.io_en_2.7.2_quickstart.html&d=DwMFaQ&c=v4IIwRuZAmwupIjowmMWUmLasxPEgYsgNI-O7C4ViYc&r=HORY163nBbFgyWK0c3Xwo0vnkU1QghnN6V30DBX36lU&m=OdmAeyhN4J3b_xFt4WhzHNuQCyNq824pbGFV3UroI6V5tWNz16wjdyIBWpc7MUa1&s=su9lNnhWcUnIS-p1ASVmGNvlVbDN_kimfMgeqAjZdLE&e=>, PDAL (v. 2.7.2) is installed using miniconda (conda v. 24.5.0) and applied updates were applied to conda and pdal installations.  The “pdal info autzen.laz -p 0” command works, so I’ve assume that the PDAL install was successful.
>  When I run “pdal pipeline Plot_176612216020004.json –debug”, I receive this output and error:
> “(PDAL Debug) Debugging...
> (pdal pipeline readers.ept Debug) PDAL: readers.ept: Could not read from s3-us-west-2.amazonaws.com/usgs-lidar-public/USGS_LPC_TN_27County_blk4_2015_LAS_2018/ept.json <https://urldefense.us/v2/url?u=http-3A__s3-2Dus-2Dwest-2D2.amazonaws.com_usgs-2Dlidar-2Dpublic_USGS-5FLPC-5FTN-5F27County-5Fblk4-5F2015-5FLAS-5F2018_ept.json&d=DwMFaQ&c=v4IIwRuZAmwupIjowmMWUmLasxPEgYsgNI-O7C4ViYc&r=HORY163nBbFgyWK0c3Xwo0vnkU1QghnN6V30DBX36lU&m=OdmAeyhN4J3b_xFt4WhzHNuQCyNq824pbGFV3UroI6V5tWNz16wjdyIBWpc7MUa1&s=grZ4fqpuKLbRQaHxZRQsSUZEWar0gYK3B0ovPUvWjCc&e=> “
>  The contents of Plot_176612216020004.json are:
> [
>   {
>     "tag": "ept_reader",
>     "type": "readers.ept",
>     "bounds": "([ -9423306.45485711 , -9421847.59871605 ],[ 4175665.92739632 , 4177131.3660114 ])",
>     "filename": “https://s3-us-west-2.amazonaws.com/usgs-lidar-public/USGS_LPC_TN_27County_blk4_2015_LAS_2018/ept.json <https://urldefense.us/v2/url?u=https-3A__s3-2Dus-2Dwest-2D2.amazonaws.com_usgs-2Dlidar-2Dpublic_USGS-5FLPC-5FTN-5F27County-5Fblk4-5F2015-5FLAS-5F2018_ept.json&d=DwMFaQ&c=v4IIwRuZAmwupIjowmMWUmLasxPEgYsgNI-O7C4ViYc&r=HORY163nBbFgyWK0c3Xwo0vnkU1QghnN6V30DBX36lU&m=_j6WrNWoVwy77DWC5EJvBc9LKUL5lV6AlicsKukZeWnLAijORUp4Y6Y6O2QTeSFs&s=2fzUXpUwgQYrH-rkW6_bGLG3pgVPaUTGCCioQXewQRU&e=>”,
>     "resolution": "0.01",
>     "threads": "4"
>   },
>   {
>     "tag": "las_writer",
>     "type": "writers.las",
>     "filename": "USGS_LPC_TN_27County_blk4_2015_LAS_2018_176612216020004.laz",
>     "compression": "laszip",
>     "extra_dims": "all",
>     "forward": "header, vlr",
>     "offset_x": "auto",
>     "offset_y": "auto",
>     "offset_z": "auto",
>     "scale_x": "0.01",
>     "scale_y": "0.01",
>     "scale_z": "0.01"
>   }
> ]
>  
> I can access the etp.json file listed under filename using my browser and also using a curl command from the conda prompt.
> I have also tried the Iowa example from this tutorial and receive the same “Could not read from ….” error.
>  Any suggestions for solving this problem?  My overall goal is to download lidar point clouds for a set of 200 field plots (3 ha each).
>  Thank you,
> Scott
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