<div dir="ltr">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?<div><br clear="all"><div><div dir="ltr" class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><div><font face="arial, helvetica, sans-serif">Kirk Waters, PhD </font></div><div><font face="arial, helvetica, sans-serif">NOAA Office for Coastal Management<br></font></div><div><font face="arial, helvetica, sans-serif">Applied Sciences Program </font></div><div><div><font face="arial, helvetica, sans-serif"><a href="http://coast.noaa.gov/digitalcoast" target="_blank">coast.noaa.gov/digitalcoast</a></font></div></div><div><br></div><div><br></div></div></div></div><br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Mon, Jul 8, 2024 at 7:26 AM Pearson, Scott via pdal <<a href="mailto:pdal@lists.osgeo.org">pdal@lists.osgeo.org</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div class="msg4496764849163535319">
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<p class="MsoNormal"><span style="font-size:12pt">Hi Paul,<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:12pt"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:12pt">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:<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:12pt;color:rgb(68,114,196)">{<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:12pt;color:rgb(68,114,196)"> "tag": "ept_reader",<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:12pt;color:rgb(68,114,196)"> "type": "readers.ept",<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:12pt;color:rgb(68,114,196)"> "bounds": "([ -9423306.45485711 , -9421847.59871605 ],[ 4175665.92739632 , 4177131.3660114 ])",<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:12pt;color:rgb(68,114,196)"> "filename": “<a href="https://s3-us-west-2.amazonaws.com/usgs-lidar-public/USGS_LPC_TN_27County_blk4_2015_LAS_2018/ept.json" target="_blank">https://s3-us-west-2.amazonaws.com/usgs-lidar-public/USGS_LPC_TN_27County_blk4_2015_LAS_2018/ept.json</a>”,<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:12pt;color:rgb(68,114,196)"> "resolution": "0.01",<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:12pt;color:rgb(68,114,196)"> "threads": "4"<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:12pt;color:rgb(68,114,196)"> }<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:12pt"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:12pt">Thanks,<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:12pt">Scott<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:12pt"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:12pt"><u></u> <u></u></span></p>
<div style="border-right:none;border-bottom:none;border-left:none;border-top:1pt solid rgb(225,225,225);padding:3pt 0in 0in">
<p class="MsoNormal"><b>From:</b> Paul Harwood <<a href="mailto:runette@gmail.com" target="_blank">runette@gmail.com</a>> <br>
<b>Sent:</b> Saturday, July 6, 2024 5:10 AM<br>
<b>To:</b> Pearson, Scott <<a href="mailto:pearsonsm@ornl.gov" target="_blank">pearsonsm@ornl.gov</a>><br>
<b>Cc:</b> <a href="mailto:pdal@lists.osgeo.org" target="_blank">pdal@lists.osgeo.org</a><br>
<b>Subject:</b> [EXTERNAL] Re: [pdal] reader.ept error - Could read from<u></u><u></u></p>
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<p class="MsoNormal"><u></u> <u></u></p>
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<p class="MsoNormal">I don't know if this is just an artefact of the email - but :<u></u><u></u></p>
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<p class="MsoNormal"><u></u> <u></u></p>
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<p class="MsoNormal"><a href="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=" target="_blank"><span style="font-size:12pt">https://s3-us-west-2.amazonaws.com/usgs-lidar-public/USGS_LPC_TN_27County_blk4_2015_LAS_2018/ept.json</span></a><u></u><u></u></p>
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<p class="MsoNormal"><u></u> <u></u></p>
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<p class="MsoNormal">should be:<u></u><u></u></p>
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<p class="MsoNormal"><br>
"<a href="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=" target="_blank"><span style="font-size:12pt">https://s3-us-west-2.amazonaws.com/usgs-lidar-public/USGS_LPC_TN_27County_blk4_2015_LAS_2018/ept.json</span></a>"<u></u><u></u></p>
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<p class="MsoNormal"><u></u> <u></u></p>
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<p class="MsoNormal">On Fri, 5 Jul 2024 at 17:24, Pearson, Scott via pdal <<a href="mailto:pdal@lists.osgeo.org" target="_blank">pdal@lists.osgeo.org</a>> wrote:<u></u><u></u></p>
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<p class="MsoNormal"><span style="font-size:12pt">Dear PDAL folks,</span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-size:12pt"> I have an error using readers.ept in a PDAL pipeline. Using instructions on the
<a href="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=" target="_blank">
Quickstart page</a>, 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.</span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-size:12pt"> When I run “pdal pipeline Plot_176612216020004.json –debug”, I receive this output and error:</span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-size:12pt">“(PDAL Debug) Debugging...</span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-size:12pt">(pdal pipeline readers.ept Debug) PDAL: readers.ept: Could not read from
<a href="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=" target="_blank">
s3-us-west-2.amazonaws.com/usgs-lidar-public/USGS_LPC_TN_27County_blk4_2015_LAS_2018/ept.json</a> “</span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-size:12pt"> The contents of Plot_176612216020004.json are:</span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-size:12pt">[</span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-size:12pt"> {</span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-size:12pt"> "tag": "ept_reader",</span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-size:12pt"> "type": "readers.ept",</span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-size:12pt"> "bounds": "([ -9423306.45485711 , -9421847.59871605 ],[ 4175665.92739632 , 4177131.3660114 ])",</span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-size:12pt"> "filename": “<a href="https://s3-us-west-2.amazonaws.com/usgs-lidar-public/USGS_LPC_TN_27County_blk4_2015_LAS_2018/ept.json" target="_blank">https://s3-us-west-2.amazonaws.com/usgs-lidar-public/USGS_LPC_TN_27County_blk4_2015_LAS_2018/ept.json</a>”,</span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-size:12pt"> "resolution": "0.01",</span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-size:12pt"> "threads": "4"</span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-size:12pt"> },</span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-size:12pt"> {</span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-size:12pt"> "tag": "las_writer",</span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-size:12pt"> "type": "writers.las",</span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-size:12pt"> "filename": "USGS_LPC_TN_27County_blk4_2015_LAS_2018_176612216020004.laz",</span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-size:12pt"> "compression": "laszip",</span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-size:12pt"> "extra_dims": "all",</span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-size:12pt"> "forward": "header, vlr",</span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-size:12pt"> "offset_x": "auto",</span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-size:12pt"> "offset_y": "auto",</span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-size:12pt"> "offset_z": "auto",</span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-size:12pt"> "scale_x": "0.01",</span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-size:12pt"> "scale_y": "0.01",</span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-size:12pt"> "scale_z": "0.01"</span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-size:12pt"> }</span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-size:12pt">]</span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-size:12pt"> </span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-size:12pt">I can access the etp.json file listed under filename using my browser and also using a curl command from the conda prompt.
</span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-size:12pt">I have also tried the Iowa example from this tutorial and receive the same “Could not read from ….” error.
</span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-size:12pt"> 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).
</span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-size:12pt"> Thank you,</span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-size:12pt">Scott</span><u></u><u></u></p>
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