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<p class="MsoNormal" style="background:white"><span lang="EN-GB" style="color:#212121">Hi Lei,<o:p></o:p></span></p>
<p class="MsoNormal" style="background:white"><span lang="EN-GB" style="color:#212121"><o:p> </o:p></span></p>
<p class="MsoNormal" style="background:white"><span lang="EN-GB" style="color:#212121">For the conventional use of ENU for GNSS station coordinates you only need to use the first three parameters (latitude, longitude and height) and you should set the other
5 parameters to zero.<o:p></o:p></span></p>
<p class="MsoNormal" style="background:white"><span lang="EN-GB" style="color:#212121"><o:p> </o:p></span></p>
<p class="MsoNormal" style="background:white"><span lang="EN-GB" style="color:#212121">Regards, Jochem<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB" style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB" style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span lang="EN-US">From:</span></b><span lang="EN-US"> leiyang@fio.org.cn <leiyang@fio.org.cn>
<br>
<b>Sent:</b> zaterdag 21 november 2020 15:39<br>
<b>To:</b> Lesparre, Jochem <Jochem.Lesparre@kadaster.nl>; proj <proj@lists.osgeo.org><br>
<b>Subject:</b> Re: [PROJ] How to transform XYZ to NEU<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">hi,Jochem<o:p></o:p></p>
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<p class="MsoNormal">Thank you for your bat codes. I try to run it on my computer. It needs a bit more input parameters that is not easy for me.<o:p></o:p></p>
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<p class="MsoNormal">The GNSS community have mature codes that can do the transformation fast and easy. But may not open source. <o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Kind regards,<o:p></o:p></p>
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<p class="MsoNormal">Lei<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><span style="font-size:9.0pt">---Original---<o:p></o:p></span></p>
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<p class="MsoNormal" style="background:#F0F0F0"><b><span style="font-size:9.0pt;color:#212121">From:</span></b><span style="font-size:9.0pt;color:#212121"> "Lesparre, Jochem"<<a href="mailto:Jochem.Lesparre@kadaster.nl">Jochem.Lesparre@kadaster.nl</a>><o:p></o:p></span></p>
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<p class="MsoNormal" style="background:#F0F0F0"><b><span style="font-size:9.0pt;color:#212121">Date:</span></b><span style="font-size:9.0pt;color:#212121"> Sat, Nov 21, 2020 13:51 PM<o:p></o:p></span></p>
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<p class="MsoNormal" style="background:#F0F0F0"><b><span style="font-size:9.0pt;color:#212121">To:</span></b><span style="font-size:9.0pt;color:#212121"> "proj"<<a href="mailto:proj@lists.osgeo.org">proj@lists.osgeo.org</a>>;"<a href="mailto:leiyang@fio.org.cn">leiyang@fio.org.cn</a>"<<a href="mailto:leiyang@fio.org.cn">leiyang@fio.org.cn</a>>;<o:p></o:p></span></p>
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<p class="MsoNormal" style="background:#F0F0F0"><b><span style="font-size:9.0pt;color:#212121">Subject:</span></b><span style="font-size:9.0pt;color:#212121"> Re: [PROJ] How to transform XYZ to NEU<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal" style="background:white"><span style="color:#212121">Hi Lei,<o:p></o:p></span></p>
<p class="MsoNormal" style="background:white"><span style="color:#212121"><o:p> </o:p></span></p>
<p class="MsoNormal" style="background:white"><span style="color:#212121">Although some users have asked for this feature before, there is no specific PROJ functionality for this. However, you can do the transformation with cct if you use the right parameters:<o:p></o:p></span></p>
<p class="MsoNormal" style="background:white"><span style="color:#212121"><a href="https://github.com/OSGeo/PROJ/issues/500">https://github.com/OSGeo/PROJ/issues/500</a><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Arial",sans-serif;color:black">Regards, Jochem <o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Arial",sans-serif;color:black"><o:p> </o:p></span></p>
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<p class="MsoNormal"><strong><span style="font-family:"Calibri",sans-serif">From:</span></strong> PROJ <<a href="mailto:proj-bounces@lists.osgeo.org">proj-bounces@lists.osgeo.org</a>> on behalf of
<a href="mailto:leiyang@fio.org.cn">leiyang@fio.org.cn</a> <<a href="mailto:leiyang@fio.org.cn">leiyang@fio.org.cn</a>><br>
<strong><span style="font-family:"Calibri",sans-serif">Sent:</span></strong> Saturday, 21 November 2020, 02:13<br>
<strong><span style="font-family:"Calibri",sans-serif">To:</span></strong> proj<br>
<strong><span style="font-family:"Calibri",sans-serif">Subject:</span></strong> [PROJ] How to transform XYZ to NEU<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Hi,<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 have the coordinates of XYZ under earth geocentirc system. I would like to transform them to the NEU (North East Up) system which is a GNSS frequently used system.<o:p></o:p></p>
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<p class="MsoNormal">Now I know the cct could do the transform XYZ to BLH: <o:p></o:p></p>
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<pre><span class="line">echo </span><span class="number">4097216.6805</span><span class="line"> </span><span class="number">4429119.0287</span><span class="line"> </span><span class="number">-2065771.3676</span><span class="line"> </span><span class="number">0</span><span class="line"> | cct -I +proj=cart +ellps=GRS80</span><o:p></o:p></pre>
<pre>47.2292116930 -19.0183060232 1552.9924 0.0000<o:p></o:p></pre>
<pre>But I do not know how to transform it to NEU. I also checked the documents, and find no answer.<o:p></o:p></pre>
<pre>Thanks<o:p></o:p></pre>
<pre><o:p> </o:p></pre>
<pre>Lei <o:p></o:p></pre>
<pre><o:p> </o:p></pre>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><a href="mailto:leiyang@fio.org.cn">leiyang@fio.org.cn</a><o:p></o:p></span></p>
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