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I am trying to read and write LAS (*.las) file using PDAL but getting the below warning messages and the reading/writing is not being done correctly by PDAL reader and writer for las files.

(pdal pipeline readers.las Warning) C:/denoise\lake.las: Found invalid value of '0' for point's return number.

(pdal pipeline readers.las Warning) C:/denoise\lake.las: Found invalid value of '0' for point's number of returns.

Code: enter image description here

Errors: enter image description here

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Hassam Ali
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  • You should add some code you've tried so far. – Xvolks Jul 26 '17 at 15:14
  • { "pipeline":[ "C:/denoise/clear.las", { "type": "filters.outlier", "method": "statistical", "multiplier": 3, "mean_k": 8 }, { "type": "filters.range", "limits": "Classification![7:7],Z[-100:3000]" }, { "type": "writers.las", "compression": "true", "minor_version": "2", "dataformat_id": "0", "filename":"C:/denoise/clean.las" } ] } This code works correctly for *.laz but not for *.las files. – Hassam Ali Jul 27 '17 at 10:51
  • I've figured out that the point cloud has been created from stereo pairs thus there will be no return of the beam information with the points. – Hassam Ali Jul 31 '17 at 15:15

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