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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Sorry for not getting back to you sooner, Andrew.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">I’ve rebuild PDAL so it now has your recent changes to the GDAL reader. It doesn’t look quite right to me. I’ve made a gist with some pipeline xml files and
outputs from pdal info: <a href="https://gist.github.com/kbevers/22ae84f9ab60e5789587">
https://gist.github.com/kbevers/22ae84f9ab60e5789587</a>. In short, I’ve set up two pipelines that translate between tif and laz. The first pipeline is just a readers.gdal -> ferry band-1=Z -> writers.laz. The other is readers.gdal -> ferry band-1=Z -> range
Z[0.0:100.0] -> writers.laz. <o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">The output laz-files are found on dropbox:
<a href="https://www.dropbox.com/s/8zyx8kka0mpr7ir/test_gdal_reader_ferry.laz">https://www.dropbox.com/s/8zyx8kka0mpr7ir/test_gdal_reader_ferry.laz</a> and
<a href="https://www.dropbox.com/s/fj35lzulu2vvgdc/test_gdal_reader_range.laz">https://www.dropbox.com/s/fj35lzulu2vvgdc/test_gdal_reader_range.laz</a>
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">In both files you see that not all Z-values have been read properly by the gdal reader. There is a narrow strip of data in the western part of the file that
has the correct Z-values. Moving east all Z-values are zero which they obviously shouldn’t be. You see it best in test_gdal_reader_range.laz but if you inspect the other laz-file carefully you see the same.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">/Kristian<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><b><span lang="DA" style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">Fra:</span></b><span lang="DA" style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> Andrew Bell [<a href="mailto:andrew.bell.ia@gmail.com">mailto:andrew.bell.ia@gmail.com</a>]
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<b>Sendt:</b> mandag 08. februar 2016 20:59<br>
<b>Til:</b> Kristian Evers<br>
<b>Emne:</b> Re: [pdal] Bug in readers.gdal?<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="DA"><o:p> </o:p></span></p>
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<p class="MsoNormal">On Mon, Feb 8, 2016 at 9:20 AM, Kristian Evers <<a href="mailto:kreve@sdfe.dk" target="_blank">kreve@sdfe.dk</a>> wrote:<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Okay. I haven’t looked into the code but my feeling is that it is more than just an error in the
documentation. If the problem was only the docs I would expect the pipeline to work when switching the in/out dimensions. Would you agree?</span><o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">I found a couple of bugs that were causing trouble with your file. I pushed a fix to the PDAL master branch. Please note that your file contains NODATA values. PDAL does not currently support NODATA value, but you can use a PDAL filter
to remove points that contain NODATA values if you like.<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Best,<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">-- <o:p></o:p></p>
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<p class="MsoNormal">Andrew Bell<br>
<a href="mailto:andrew.bell.ia@gmail.com" target="_blank">andrew.bell.ia@gmail.com</a><o:p></o:p></p>
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