<div dir="ltr"><div>Running cs2cs at the command line I get:<br>echo 3343570 6829498 | cs2cs -f '%2f' +init=epsg:2393 +to +init=epsg:4326<br>24.054805 61.541419 25.243873<br></div>So the new version looks to be in error. Maybe it's not applying the datum transformation?<br><br>Rich<br><br><div><br><br><div class="gmail_extra"><br><div class="gmail_quote">On Tue, Feb 17, 2015 at 2:04 PM, Clément Ronzon <span dir="ltr"><<a href="mailto:clem.rz@gmail.com" target="_blank">clem.rz@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr">Hi,<div><br></div><div>A long time ago I was using the following version of Proj4js:</div><div>$Id: Proj.js 2956 2007-07-09 12:17:52Z steven $</div><div>Which, was returning 61.541418560123766°N, 24.054804906259587°E when converting 3343570m, 6829498m from EPSG:2393 (see definition below) to WGS84.</div><div>(follow this link: <a href="http://twcc.free.fr/?l=en&sc=WGS84&dc=EPSG%253A2393&wgs84=24.054804906259587%252C61.541418560123766&z=2&mt=terrain" target="_blank">http://twcc.free.fr/?l=en&sc=WGS84&dc=EPSG%253A2393&wgs84=24.054804906259587%252C61.541418560123766&z=2&mt=terrain</a>)</div><div><br></div><div>Today I'm running my app with version 2.3.4-alpha and it returns a WGS84 a bit different for the same conversion:<br>61.5409642803359°N, 24.057490703013173°E<br></div><div>(follow this link: <a href="http://twcc.fr/fr/?sc=WGS84&dc=EPSG%253A2393&wgs84=24.057490703013173%252C61.54096428033589&z=2&mt=terrain#donate" target="_blank">http://twcc.fr/fr/?sc=WGS84&dc=EPSG%253A2393&wgs84=24.057490703013173%252C61.54096428033589&z=2&mt=terrain#donate</a>)</div><div><br></div><div>If someone could explain to me why we have such a difference (151 meters) and/or which one of those two results should I trust in, I would be very grateful.</div><div><br></div><div>BTW, Proj4js is a very amazing project/library and is so useful!</div><div><br></div><div>Here is the definition of EPSG:2393 I use for both calculations:</div><div>+title=KKJ Zone 3 +proj=tmerc +lat_0=0 +lon_0=27 +k=1 +x_0=3500000 +y_0=0 +ellps=intl +towgs84=-96.0617,-82.4278,-121.7435,4.80107,0.34543,-1.37646,1.4964 +units=m +no_defs<br></div><div><br></div><div>Thank you.</div><div>Sincerely,</div><div><div><div><div dir="ltr"><div><div dir="ltr">Clément Ronzon<br><a href="https://goo.gl/maps/z0Cq5" target="_blank">Retorno Elias Nandino #50</a><br>Los Encinos 2 etapa 2<br><div>83293 Hermosillo, Sonora, MEXICO<br>Tel. # : 6621 96 18 66</div><div><a href="http://twcc.fr/?sc=WGS84&dc=W3wConnector&wgs84=-110.9359610080719%252C29.05729043310689&z=19&mt=hybrid#donate" target="_blank">génisse.foliot.éraillure</a><br></div><div><a href="http://twcc.free.fr" target="_blank"><span></span><img src="http://twcc.free.fr/favicon.ico"></a><a href="http://www.grottocenter.org/" target="_blank"><img src="http://www.grottocenter.org/favicon.png" alt=""></a><a href="http://www.zakbag.com" target="_blank"><img src="http://www.zakbag.com/includes/sts_templates/zakbag_V0_7/images/favicon.gif"></a> <a href="http://www.wikicaves.org/" target="_blank"><img src="http://www.wikicaves.org/_/rsrc/1360159358408/home/logoGC1.png"></a></div></div></div></div></div></div>
</div></div>
<br>_______________________________________________<br>
MetaCRS mailing list<br>
<a href="mailto:MetaCRS@lists.osgeo.org">MetaCRS@lists.osgeo.org</a><br>
<a href="http://lists.osgeo.org/mailman/listinfo/metacrs" target="_blank">http://lists.osgeo.org/mailman/listinfo/metacrs</a><br></blockquote></div><br><br clear="all"><br>-- <br><div class="gmail_signature"><div dir="ltr">Richard W. Greenwood, PLS<br><a href="http://www.greenwoodmap.com" target="_blank">www.greenwoodmap.com</a></div></div>
</div></div></div>