<div dir="ltr"><div class="gmail_quote"><div dir="ltr"><div class="gmail_extra"><div class="gmail_quote"><span class="">On Mon, Oct 24, 2016 at 10:52 AM, Benjamin Kabelik <span dir="ltr"><<a href="mailto:b.kabelik@airbornetechnologies.at" target="_blank">b.kabelik@<wbr>airbornetechnologies.at</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div lang="DE-AT" link="#0563C1" vlink="#954F72"><div class="m_-7939016182229108876m_-3178101566328536597WordSection1"><p class="MsoNormal"><span lang="EN-GB">Dear mailing list members,<u></u><u></u></span></p><p class="MsoNormal"><span lang="EN-GB"><u></u> <u></u></span></p><p class="MsoNormal"><span lang="EN-GB">I read the thread about the extra bytes and wrote a pdal translate command for a ntv2 projection from UTM33n ETRS89 to Austria MGI M34:<u></u><u></u></span></p><p class="MsoNormal"><span lang="EN-GB"><u></u> <u></u></span></p><p style="margin:0cm;margin-bottom:.0001pt"><span lang="EN-GB" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:black">For %i in (*.las) do (docker run -v c:/temp/trafo_wien2/:/data pdal/pdal:1.3 pdal translate reprojection --filters.reprojection.in_srs=<wbr>"EPSG:25833" --filters.reprojection.out_srs<wbr>="+proj=tmerc +lat_0=0 +lon_0=16.33333333333333 +k=1 +x_0=0 +y_0=-5000000 +ellps=bessel +towgs84=577.326,90.129,463.91<wbr>9,5.137,1.474,5.297,2.4232 +units=m +no_defs +nadgrids=/data/AT_GIS_GRID.gs<wbr>b" --writers.las.forward=vlr --writers.las.extra_dims="Ampl<wbr>itude=float,Pulse width=float" --writers.las.minor_version=4 --writers.las.dataformat_id=6 --writers.las.offset_x=auto --writers.las.offset_y=auto --writers.las.offset_z=auto -i /data/%i -o /data/%i_gk_gisgrid.las)<u></u><u></u></span></p><p class="MsoNormal"><span lang="EN-GB"><u></u> <u></u></span></p><p class="MsoNormal"><span lang="EN-GB"><u></u> <u></u></span></p><p class="MsoNormal"><span lang="EN-GB">There are two things that came up:<u></u><u></u></span></p><p class="m_-7939016182229108876m_-3178101566328536597MsoListParagraph"><u></u><span lang="EN-GB"><span>1.<span style="font:7.0pt "Times New Roman""> </span></span></span><u></u><span lang="EN-GB">I had to switch the data type of amplitude and pulse width from uint16 to float because with uint16 I get integer values instead of float.<u></u><u></u></span></p><p class="m_-7939016182229108876m_-3178101566328536597MsoListParagraph"><u></u><span lang="EN-GB"><span>2.<span style="font:7.0pt "Times New Roman""> </span></span></span><u></u><span lang="EN-GB">Is there any option to forward the description and scale of the extra bytes?</span></p></div></div></blockquote><div><br></div></span><div>I'm sorry, but there is currently no way to set the scale/offset or description in an extra-bytes VLR/field. I'd be happy to help with a contribution that you may wish to make to remedy the situation.</div><div><br></div></div><div>Best,</div><span class="HOEnZb"><font color="#888888"><div><br></div></font></span></div></div></div>-- <br><div class="gmail_signature" data-smartmail="gmail_signature">Andrew Bell<br><a href="mailto:andrew.bell.ia@gmail.com" target="_blank">andrew.bell.ia@gmail.com</a></div>
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