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<p class="MsoNormal"><span style="font-size:12.0pt">Dear PDA folks,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt">I have an error using readers.ept in a PDAL pipeline. Using instructions on the
<a href="https://pdal.io/en/2.7.2/quickstart.html">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.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt">When I run “pdal pipeline Plot_176612216020004.json –debug”, I receive this output and error:<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt">“(PDAL Debug) Debugging...<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt">(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 “<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt">The contents of Plot_176612216020004.json are:<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt">[<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt"> {<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt"> "tag": "ept_reader",<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt"> "type": "readers.ept",<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt"> "bounds": "([ -9423306.45485711 , -9421847.59871605 ],[ 4175665.92739632 , 4177131.3660114 ])",<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt"> "filename": <a href="https://s3-us-west-2.amazonaws.com/usgs-lidar-public/USGS_LPC_TN_27County_blk4_2015_LAS_2018/ept.json">
https://s3-us-west-2.amazonaws.com/usgs-lidar-public/USGS_LPC_TN_27County_blk4_2015_LAS_2018/ept.json</a>,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt"> "resolution": "0.01",<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt"> "threads": "4"<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt"> },<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt"> {<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt"> "tag": "las_writer",<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt"> "type": "writers.las",<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt"> "filename": "USGS_LPC_TN_27County_blk4_2015_LAS_2018_176612216020004.laz",<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt"> "compression": "laszip",<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt"> "extra_dims": "all",<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt"> "forward": "header, vlr",<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt"> "offset_x": "auto",<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt"> "offset_y": "auto",<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt"> "offset_z": "auto",<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt"> "scale_x": "0.01",<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt"> "scale_y": "0.01",<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt"> "scale_z": "0.01"<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt"> }<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt">]<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt;mso-ligatures:none">I can access the etp.json file listed under filename using my browser and also using a curl command from the conda prompt.
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt;mso-ligatures:none">I have also tried the Iowa example from this tutorial and receive the same “Could not read from ….” error.
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt;mso-ligatures:none"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt;mso-ligatures:none">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).
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt;mso-ligatures:none"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt;mso-ligatures:none">Thank you,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt;mso-ligatures:none">Scott</span><o:p></o:p></p>
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