[pdal] reader.ept error - Could read from

Paul Harwood runette at gmail.com
Sat Jul 6 02:09:45 PDT 2024


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

should be:

"
https://s3-us-west-2.amazonaws.com/usgs-lidar-public/USGS_LPC_TN_27County_blk4_2015_LAS_2018/ept.json
"

On Fri, 5 Jul 2024 at 17:24, Pearson, Scott via pdal <pdal at lists.osgeo.org>
wrote:

> Dear PDA folks,
>
>
>
> I have an error using readers.ept in a PDAL pipeline.  Using instructions
> on the Quickstart page <https://pdal.io/en/2.7.2/quickstart.html>, 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
>>
>
>
> 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
> ,
>
>     "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
> _______________________________________________
> pdal mailing list
> pdal at lists.osgeo.org
> https://lists.osgeo.org/mailman/listinfo/pdal
>
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