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Interestingly,
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In the Excel from Het Kadaster with the TM parameters for Aruba, Mugnier 2002 is mentioned as source.
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Grids & Datums of July 2002.
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The used source for the transformation parameters is Doyle 2006 (NGS, NOAA, October 2006).
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The mentioned Excel is part of PCTRANS.
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Oscar van Vlijmen
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Op 9 februari 2020 om 20:18 schreef Jelmer Baas <Jelmer.Baas@speerit.nl>:
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<p class="ox-4c8e74714e-MsoNormal">Hi Jochem,</p>
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<p class="ox-4c8e74714e-MsoNormal">Thank you for the information. I’ll dig through their documentation and contact them.</p>
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<p class="ox-4c8e74714e-MsoNormal">Here’s to hoping I can provide the proj string, later on.</p>
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<p style="margin-bottom: 8.0pt; line-height: 106%;" class="ox-4c8e74714e-MsoNormal"><span style="color: #1f497d;">Regards,<br></span><strong><span style="font-size: 10.0pt; line-height: 106%; font-family: 'Arial',sans-serif; color: #1f497d;">Jelmer Baas </span></strong></p>
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<p class="ox-4c8e74714e-MsoNormal"><strong>From:</strong> Lesparre, Jochem <Jochem.Lesparre@kadaster.nl> <br><strong>Sent:</strong> vrijdag 7 februari 2020 17:31<br><strong>To:</strong> Jelmer Baas <Jelmer.Baas@speerit.nl>; proj@lists.osgeo.org<br><strong>Subject:</strong> RE: Proper projection system for Aruba</p>
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<p class="ox-4c8e74714e-MsoNormal">Hi Jelmer,</p>
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<p class="ox-4c8e74714e-MsoNormal">Aruba’s CRS is a local TM projection with its central meridian through the Hooiberg. Unfortunately it is not in the EPSG registry.</p>
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<p class="ox-4c8e74714e-MsoNormal">An approximate transformation is available in the PCTrans software by the Dutch Hydrographic Service:</p>
<p class="ox-4c8e74714e-MsoNormal"><a href="https://english.defensie.nl/topics/hydrography/documents/applications/2018/06/06/pctrans5_20180601">https://english.defensie.nl/topics/hydrography/documents/applications/2018/06/06/pctrans5_20180601</a></p>
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<p class="ox-4c8e74714e-MsoNormal">If you want to use PROJ, the transformation parameters of PCTrans can probably be found in de documentation of the software or obtained by sending a message to NSGI:</p>
<p class="ox-4c8e74714e-MsoNormal"><a href="https://www.nsgi.nl/over-ons/nsgi/contact">https://www.nsgi.nl/over-ons/nsgi/contact</a></p>
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<p class="ox-4c8e74714e-MsoNormal">Precise (sub metre) transformation parameters are available at the local authorities DLV, and more precise (centimetre) transformation parameters should be computed for DLV this year. However, I’m not sure if they share these. Contact information can be found here:</p>
<p class="ox-4c8e74714e-MsoNormal"><a href="https://www.overheid.aw/home-ned/departementen_46763/item/dienst-landmeetkunde-en-vastgoedregistratie-dlv_4615.html">https://www.overheid.aw/home-ned/departementen_46763/item/dienst-landmeetkunde-en-vastgoedregistratie-dlv_4615.html</a></p>
<p class="ox-4c8e74714e-MsoNormal">If this contact information is outdated, you can contact NSGI (see above) to ask to get you in touch with DLV.</p>
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<p class="ox-4c8e74714e-MsoNormal">Kind regards, Jochem</p>
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