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<p class="MsoNormal">Thanks. I know the ETRS89 contain lat/lon and the other transformed but I thought things were a bit off. I just downloaded the file and I will check things out.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Thank you for the quick response for a “non-member.” BTW, I am a member of OSGEO but just not PROJ (if they are different?).<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<div>
<div style="border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in 0in 0in">
<p class="MsoNormal"><b>From:</b> Lesparre, Jochem <Jochem.Lesparre@kadaster.nl> <br>
<b>Sent:</b> Friday, May 7, 2021 9:18 AM<br>
<b>To:</b> David Fileccia <dfileccia@hgnss.com>; proj@lists.osgeo.org<br>
<b>Subject:</b> RE: RD NAP + TRANS usage.<o:p></o:p></p>
</div>
</div>
<p class="MsoNormal"><o:p> </o:p></p>
<div style="mso-element:para-border-div;border:solid #FFCACA 1.0pt;padding:0in 0in 0in 0in;background:#FFCACA">
<p style="background:#FFCACA;border:none;padding:0in"><b><span lang="NL" style="font-size:12.0pt;color:black">[EXTERNAL EMAIL]</span></b><span lang="NL" style="color:black"><br>
</span><span lang="NL" style="font-size:10.0pt;color:black">DO NOT CLICK links or attachments unless you recognize the sender and know the content is safe.</span><span lang="NL"><o:p></o:p></span></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt"><span lang="NL"><o:p> </o:p></span></p>
<div>
<p class="MsoNormal"><span lang="NL">Hi David,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="NL"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB">Note that the files 002_ETRS89.TXT and 002_RDNAP.TXT do not contain coordinates of the same points! If you want a data set with corresponding coordinates of the same points, you can use the file Z001_ETRS89andRDNAP.TXT,
which is available here:<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB"><a href="https://linkscan.io/scan/ux/aHR0cHM6Ly93d3cubnNnaS5ubC9nZW9kZXRpc2NoZS1pbmZyYXN0cnVjdHV1ci9wcm9kdWN0ZW4vcHJvZ3JhbW1hLXJkbmFwdHJhbnMvemVsZnZhbGlkYXRpZQ==/C2AE946C3EB7E018315736716890F537BCE8827D290787BEB74234D7969E4998?c=1&i=1&docs=1">https://www.nsgi.nl/geodetische-infrastructuur/producten/programma-rdnaptrans/zelfvalidatie</a><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB"> <o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB">I hope that solves your problem. If it does, suggestions on how to improve our documentation a nsgi.nl to prevent others from having the same confusion are most welcome.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB">Kind regards, Jochem<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="NL"><o:p> </o:p></span></p>
<p class="MsoNormal"><b><span lang="NL" style="color:#00889E">J. Lesparre</span></b><span lang="NL" style="font-size:10.0pt"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="NL">Geodetic Engineer (MSc)<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="NL"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="NL">Kadaster<span style="color:black"> </span><span style="color:#00889E">|</span><span style="color:black"> </span>Rijksdriehoeksmeting<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB">+31-88-183 20 00<span style="color:black"> </span><span style="color:#00889E">|</span><span style="color:black"> </span></span><span lang="NL" style="color:#0563C1"><a href="mailto:rd@kadaster.nl"><span lang="EN-GB">rd@kadaster.nl</span></a></span><span lang="EN-GB"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB"><o:p> </o:p></span></p>
<p class="MsoNormal"><b><span lang="EN-GB" style="color:#00889E">Netherlands Partnership Geodetic Infrastructure</span></b><span lang="EN-GB" style="color:black"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="NL" style="color:#0563C1"><a href="https://linkscan.io/scan/ux/aHR0cHM6Ly93d3cubnNnaS5ubC8=/BEEA0BE40F79E66AF37A12E77C50AF06EAF6DA2ADB478B65CCF7E7DFCF205F0A?c=1&i=1&docs=1">https://www.nsgi.nl/</a>
<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="NL"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB"><o:p> </o:p></span></p>
<div>
<div style="border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in 0in 0in">
<p class="MsoNormal"><b>From:</b> PROJ <<a href="mailto:proj-bounces@lists.osgeo.org">proj-bounces@lists.osgeo.org</a>>
<b>On Behalf Of </b>David Fileccia<br>
<b>Sent:</b> vrijdag 7 mei 2021 14:56<br>
<b>To:</b> <a href="mailto:proj@lists.osgeo.org">proj@lists.osgeo.org</a><br>
<b>Subject:</b> [PROJ] RD NAP + TRANS usage.<o:p></o:p></p>
</div>
</div>
<p class="MsoNormal"><span lang="NL"><o:p> </o:p></span></p>
<p class="MsoNormal">Hi,<o:p></o:p></p>
<p class="MsoNormal">I am trying to get the transformations for the Netherlands using PROJ/GDAL and I just can’t seem to get the “correct” answers based on the data I have been given. I have tried both the variant 1 and 2 of the nl_nsgi_*.tif files with no
luck.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">The following data was created using the EPSG:7415 transform and nl_nsgi_rdtrans2018.tif and nl_nsgi_naptrans2018.tif:<o:p></o:p></p>
<p class="MsoNormal"><b><span style="font-family:"Courier New"">002_ETRS89.TXT 002_RDNAP.TXT My Transform<o:p></o:p></span></b></p>
<p class="MsoNormal"><b><span style="font-family:"Courier New"">point_id latitude longitude height x_coordinate y_coordinate height x coordinate y coordinate height<o:p></o:p></span></b></p>
<p class="MsoNormal"><b><span style="font-family:"Courier New"">-------- --------- --------- ---------- ------------- ------------- ---------- ------------- ------------- ----------<o:p></o:p></span></b></p>
<p class="MsoNormal"><span style="font-family:"Courier New"">27494 55.812797 6.464483 425.168800 317878.638600 658759.794800 145.672100 222633.565431 870884.933093 383.755149<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Courier New"">27495 55.299814 6.510675 470.791500 176752.325000 310861.303600 227.283900 226438.527368 813771.108781 429.897194<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Courier New"">27496 51.280225 4.474798 244.634700 294571.817600 254007.429300 67.285500 91363.817760 366154.277735 199.958129<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Courier New"">27497 52.182009 5.896621 230.874600 160485.457200 264354.757200 -4.823400 189874.491989 466218.873201 187.566647<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Courier New"">27498 51.344185 7.195423 61.603000 13061.818100 821852.289400 -33.810100 281024.030900 374436.255812 15.291030<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Courier New"">27499 53.651730 5.093408 451.380800 243523.431500 868519.454900 110.775700 135597.678988 629707.008204 410.362531<o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
<pre>I am going from WGS84 lat/long/height to the RD coordinates. My transforms are as follows:<br><span style="color:silver"> </span><span style="color:green">//</span><span style="color:silver"> </span><span style="color:green">Create</span><span style="color:silver"> </span><span style="color:green">the</span><span style="color:silver"> </span><span style="color:green">SRS</span><span style="color:silver"> </span><span style="color:green">frames</span><span style="color:silver"> </span><span style="color:green">from</span><span style="color:silver"> </span><span style="color:green">the</span><span style="color:silver"> </span><span style="color:green">WKT</span><o:p></o:p></pre>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New";color:silver">
</span><span style="font-size:10.0pt;font-family:"Courier New";color:purple">OGRSpatialReference</span><span style="font-size:10.0pt;font-family:"Courier New";color:silver">
</span><span style="font-size:10.0pt;font-family:"Courier New";color:#092E64">oSRC</span><span style="font-size:10.0pt;font-family:"Courier New"">;<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New";color:silver">
</span><span style="font-size:10.0pt;font-family:"Courier New";color:#092E64">oSRC</span><span style="font-size:10.0pt;font-family:"Courier New"">.<span style="color:#00677C">SetAxisMappingStrategy</span><span style="color:silver">
</span>(<span style="color:purple">OAMS_TRADITIONAL_GIS_ORDER</span>);<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New";color:silver">
</span><span style="font-size:10.0pt;font-family:"Courier New";color:#092E64">oSRC</span><span style="font-size:10.0pt;font-family:"Courier New"">.<span style="color:#00677C">SetWellKnownGeogCS</span><span style="color:silver">
</span>(<span style="color:green">"WGS84"</span>);<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New""><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New";color:silver">
</span><span style="font-size:10.0pt;font-family:"Courier New";color:purple">OGRSpatialReference</span><span style="font-size:10.0pt;font-family:"Courier New";color:silver">
</span><span style="font-size:10.0pt;font-family:"Courier New";color:#092E64">oDST</span><span style="font-size:10.0pt;font-family:"Courier New"">;<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New";color:silver">
</span><span style="font-size:10.0pt;font-family:"Courier New";color:#092E64">oDST</span><span style="font-size:10.0pt;font-family:"Courier New"">.<span style="color:#00677C">SetAxisMappingStrategy</span><span style="color:silver">
</span>(<span style="color:purple">OAMS_TRADITIONAL_GIS_ORDER</span>);<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New";color:silver">
</span><span style="font-size:10.0pt;font-family:"Courier New";color:#092E64">oDST</span><span style="font-size:10.0pt;font-family:"Courier New"">.<span style="color:#00677C">importFromProj4</span><span style="color:silver">
</span>(<span style="color:#092E64">“EPSG:7415”</span>);<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New""><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New";color:silver">
</span><span style="font-size:10.0pt;font-family:"Courier New";color:green">//</span><span style="font-size:10.0pt;font-family:"Courier New";color:silver">
</span><span style="font-size:10.0pt;font-family:"Courier New";color:green">Set</span><span style="font-size:10.0pt;font-family:"Courier New";color:silver">
</span><span style="font-size:10.0pt;font-family:"Courier New";color:green">the</span><span style="font-size:10.0pt;font-family:"Courier New";color:silver">
</span><span style="font-size:10.0pt;font-family:"Courier New";color:green">transformations</span><span style="font-size:10.0pt;font-family:"Courier New""><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New";color:silver">
</span><span style="font-size:10.0pt;font-family:"Courier New";color:maroon">m_g2r</span><span style="font-size:10.0pt;font-family:"Courier New";color:silver">
</span><span style="font-size:10.0pt;font-family:"Courier New";color:#00677C">=</span><span style="font-size:10.0pt;font-family:"Courier New";color:silver">
</span><i><span style="font-size:10.0pt;font-family:"Courier New";color:#00677C">OGRCreateCoordinateTransformation</span></i><span style="font-size:10.0pt;font-family:"Courier New";color:silver">
</span><i><span style="font-size:10.0pt;font-family:"Courier New"">(&<span style="color:#092E64">oSRC</span>,</span></i><span style="font-size:10.0pt;font-family:"Courier New";color:silver">
</span><i><span style="font-size:10.0pt;font-family:"Courier New"">&<span style="color:#092E64">oDST</span>)</span></i><span style="font-size:10.0pt;font-family:"Courier New"">;<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New""><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New"">===<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New""><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New"">Shift the source lat/long/height using the horizontal shift and the geoid.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New""><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New"">===<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New""><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New""><o:p> </o:p></span></p>
<pre><span style="color:silver"> </span><span style="color:olive">double</span><span style="color:silver"> </span><span style="color:#092E64">x</span><span style="color:silver"> </span>=<span style="color:silver"> </span><span style="color:maroon">lon</span>;<o:p></o:p></pre>
<pre style="-qt-block-indent:0"><span style="color:silver"> </span><span style="color:olive">double</span><span style="color:silver"> </span><span style="color:#092E64">y</span><span style="color:silver"> </span>=<span style="color:silver"> </span><span style="color:maroon">lat</span>;<o:p></o:p></pre>
<pre style="-qt-block-indent:0"><span style="color:silver"> </span><span style="color:olive">double</span><span style="color:silver"> </span><span style="color:#092E64">z</span><span style="color:silver"> </span>=<span style="color:silver"> </span><span style="color:maroon">height</span>;<o:p></o:p></pre>
<pre style="-qt-paragraph-type:empty;-qt-block-indent:0"><o:p> </o:p></pre>
<pre style="-qt-block-indent:0"><span style="color:silver"> </span><span style="color:green">//</span><span style="color:silver"> </span><span style="color:green">Perform</span><span style="color:silver"> </span><span style="color:green">the</span><span style="color:silver"> </span><span style="color:green">transformation</span><span style="color:silver"> </span><span style="color:green">from</span><span style="color:silver"> </span><span style="color:green">LLA</span><span style="color:silver"> </span><span style="color:green">to</span><span style="color:silver"> </span><span style="color:green">NEZ</span><o:p></o:p></pre>
<pre style="-qt-block-indent:0"><span style="color:silver"> </span><span style="color:olive">int</span><span style="color:silver"> </span><span style="color:#092E64">ok</span><span style="color:silver"> </span>=<span style="color:silver"> </span><span style="color:olive">false</span>;<o:p></o:p></pre>
<pre style="-qt-block-indent:0"><span style="color:silver"> </span><span style="color:olive">if</span><span style="color:silver"> </span>(<span style="color:maroon">m_g2r</span>)<span style="color:silver"> </span>{<o:p></o:p></pre>
<pre style="-qt-block-indent:0"><span style="color:silver"> </span><span style="color:#092E64">ok</span><span style="color:silver"> </span>=<span style="color:silver"> </span><span style="color:maroon">m_g2r</span><span style="color:#00677C">->Transform</span><span style="color:silver"> </span>(<span style="color:navy">1</span>,<span style="color:silver"> </span><i>&<span style="color:#092E64">x</span></i>,<span style="color:silver"> </span><i>&<span style="color:#092E64">y</span></i>,<span style="color:silver"> </span><i>&<span style="color:#092E64">z</span></i>);<o:p></o:p></pre>
<pre style="-qt-block-indent:0"><span style="color:silver"> </span>}<o:p></o:p></pre>
<pre style="-qt-paragraph-type:empty;-qt-block-indent:0"><o:p> </o:p></pre>
<pre style="-qt-block-indent:0"><span style="color:silver"> </span><span style="color:green">//</span><span style="color:silver"> </span><span style="color:green">If</span><span style="color:silver"> </span><span style="color:green">we</span><span style="color:silver"> </span><span style="color:green">fail</span><span style="color:silver"> </span><span style="color:green">then</span><span style="color:silver"> </span><span style="color:green">return</span><span style="color:silver"> </span><span style="color:green">failed</span><span style="color:silver"> </span><span style="color:green">results</span><o:p></o:p></pre>
<pre style="-qt-block-indent:0"><span style="color:silver"> </span><span style="color:olive">if</span><span style="color:silver"> </span>(!<span style="color:#092E64">ok</span>)<span style="color:silver"> </span>{<o:p></o:p></pre>
<pre style="-qt-block-indent:0"><span style="color:silver"> </span><span style="color:#092E64">x</span><span style="color:silver"> </span>=<span style="color:silver"> </span><span style="color:navy">0</span>;<o:p></o:p></pre>
<pre style="-qt-block-indent:0"><span style="color:silver"> </span><span style="color:#092E64">y</span><span style="color:silver"> </span>=<span style="color:silver"> </span><span style="color:navy">0</span>;<o:p></o:p></pre>
<pre style="-qt-block-indent:0"><span style="color:silver"> </span><span style="color:#092E64">z</span><span style="color:silver"> </span>=<span style="color:silver"> </span><span style="color:#CE5C00">BAD_VALUE</span>;<o:p></o:p></pre>
<pre style="-qt-block-indent:0"><span style="color:silver"> </span>}<o:p></o:p></pre>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I have tried swapping lat/long and I have tried different transforms. I have even tried the variant 1 files with no luck. I think, the group that is having me look at this, has not given me all the information about the coordinate collection.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">So, in summary:<o:p></o:p></p>
<ol style="margin-top:0in" start="1" type="1">
<li class="MsoListParagraph" style="margin-left:0in;mso-list:l0 level1 lfo3">Does anyone have any idea about what I am doing wrong?<o:p></o:p></li><li class="MsoListParagraph" style="margin-left:0in;mso-list:l0 level1 lfo3">Are there any known monuments with lat/long/height and the corresponding RD coordinates that I can check against?<o:p></o:p></li></ol>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Best Regards,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><b><span lang="EN-CA" style="font-family:"Century Gothic",sans-serif;color:black">David Fileccia</span></b><span lang="EN-CA"><o:p></o:p></span></p>
<p class="MsoNormal"><b><span lang="EN-CA" style="font-size:10.0pt;font-family:"Century Gothic",sans-serif;color:black">Senior Systems Engineer | HEMISPHERE GNSS</span></b><span lang="EN-CA"><o:p></o:p></span></p>
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<p class="MsoNormal"><span lang="EN-CA" style="font-size:10.0pt;font-family:"Century Gothic",sans-serif"><a href="mailto:dfileccia@hgnss.com">dfileccia@hgnss.com</a><span style="color:black"> | <a href="https://linkscan.io/scan/ux/aHR0cDovL3NlY3VyZS13ZWIuY2lzY28uY29tLzFEWE1JbEI2dmpPYXBxR2J2a3FpTUVocWNzcU5JekJyOXZyT0Nhb3lzUjFxWF9fdnBSYmszalMyTmF6a1FENWxrbkRzRDNqV1dKQmotbmRhWmdoRkt2WW96dTZCMEUwSFdzeUJveXRmOGhqMW5fRHFMZ3U2VEV0UlhhbWNyZktrcTR5Y3hHRlp3Z28yR0xneGJ6M0I5ZE1rZkw3RmQtbWk1Y0QxSS0wZkZOZlhjcDN4dzFGVzBiOVhtZEVxUm55bjZqQlZjVFdzTXJtWnY0UVFXNnRjTTBCMnJnSU84d19TMEJmSzVzdWJUaFVEeGNiT1hfX1FBQjZuWnhWMVViMUpGcEpuUTc0RGtHWk1VMGI0dWt3Rkt0Zy9odHRwJTNBJTJGJTJGd3d3LmhnbnNzLmNvbQ==/C9A7A27BD9033D11B6426E2660899A4E003F503B7AEE8AF5A56A0C9A0357C77F?c=1&i=1&docs=1">http://secure-web.cisco.com/1DXMIlB6vjOapqGbvkqiMEhqcsqNIzBr9vrOCaoysR1qX__vpRbk3jS2NazkQD5lknDsD3jWWJBj-ndaZghFKvYozu6B0E0HWsyBoytf8hj1n_DqLgu6TEtRXamcrfKkq4ycxGFZwgo2GLgxbz3B9dMkfL7Fd-mi5cD1I-0fFNfXcp3xw1FW0b9XmdEqRnyn6jBVcTWsMrmZv4QQW6tcM0B2rgIO8w_S0BfK5subThUDxcbOX__QAB6nZxV1Ub1JFpJnQ74DkGZMU0b4ukwFKtg/http%3A%2F%2Fwww.hgnss.com</a></span></span><span lang="EN-CA"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-CA" style="font-size:10.0pt;font-family:"Century Gothic",sans-serif;color:black"><img border="0" width="150" height="31" style="width:1.5625in;height:.3229in" id="Picture_x0020_3" src="cid:image001.png@01D74322.65D6E450"></span><span lang="EN-CA" style="font-size:10.0pt;font-family:"Century Gothic",sans-serif;color:black"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-CA" style="font-size:10.0pt;font-family:"Century Gothic",sans-serif;color:black"><o:p> </o:p></span></p>
<p class="MsoNormal"><b><span lang="EN-CA" style="font-size:8.0pt;font-family:"Century Gothic",sans-serif;color:black">Disclaimer:</span></b><span lang="EN-CA" style="font-size:8.0pt;font-family:"Century Gothic",sans-serif;color:black"> This message (including
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<p class="MsoNormal"><o:p> </o:p></p>
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