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<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Verdana","sans-serif";
color:#1F497D'>Hi,<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Verdana","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Verdana","sans-serif";
color:#1F497D'>I don’t know if you’d be interested in this but CsMap supports
this Cassini projection and the system 28193<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Verdana","sans-serif";
color:#1F497D'>You can access the CsMap API or if you have access to the
MapGuide MgCoordinateSystem API that is a wrapper around CsMap you can do it too<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Verdana","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Verdana","sans-serif";
color:#1F497D'>Hugues<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Verdana","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
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<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>
metacrs-bounces@lists.osgeo.org [mailto:metacrs-bounces@lists.osgeo.org] <b>On
Behalf Of </b>Josh Rosenthal<br>
<b>Sent:</b> Tuesday, March 24, 2009 9:45 AM<br>
<b>To:</b> Mike Adair<br>
<b>Cc:</b> metacrs@lists.osgeo.org<br>
<b>Subject:</b> Re: [MetaCRS] Proj4js: Converting from EPSG:4326 ->
EPSG:28193 fails<o:p></o:p></span></p>
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<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Hi Mike,<o:p></o:p></p>
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<p class=MsoNormal><o:p> </o:p></p>
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<p class=MsoNormal>Thanks a lot. I couldn't figure out if I was doing
something wrong or... In any case, you said 'yet'. Is there a
timeline as to when we could expect cassini projections to be supported, or do
you have any other suggestions as to how to convert coordinates to/from that?
Curiously, it appears as though <a href="http://spatialreference.org">spatialreference.org</a>
does support those reprojections, though I'm not sure what the back end is over
there.<o:p></o:p></p>
</div>
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<p class=MsoNormal><o:p> </o:p></p>
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<p class=MsoNormal>In any case, any advice would be welcome,<o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><o:p> </o:p></p>
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<p class=MsoNormal>Thanks,<o:p></o:p></p>
</div>
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<p class=MsoNormal><o:p> </o:p></p>
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<p class=MsoNormal style='margin-bottom:12.0pt'>Josh<o:p></o:p></p>
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<p class=MsoNormal>2009/3/24 Mike Adair <<a
href="mailto:madair@dmsolutions.ca">madair@dmsolutions.ca</a>><o:p></o:p></p>
<p class=MsoNormal>Josh,<br>
<br>
The cassini projection code ("proj=cass") hasn't been implemented in
Proj4js yet.<br>
<br>
Mike<br>
<br>
<br>
Josh Rosenthal wrote:<o:p></o:p></p>
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<p class=MsoNormal style='margin-bottom:12.0pt'>Hi Folks,<br>
<br>
I hope I'm sending this to the right list. Apologies if not.<br>
<br>
I'm hitting a bit of a problem with a proj4js conversion, and I'm hoping
someone can help. I'm trying to go from EPSG 4326 to 28193, and I'm just
getting my original coordinates returned. As per <a
href="http://spatialreference.org/ref/epsg/28193/" target="_blank">http://spatialreference.org/ref/epsg/28193/</a>
, I have the proj4js definition for 28193 as: <br>
Proj4js.defs["EPSG:28193"] = "+proj=cass
+lat_0=31.73409694444445 +lon_0=35.21208055555556 +x_0=170251.555
+y_0=1126867.909 +a=6378300.789 +b=6356566.435
+towgs84=-275.722,94.7824,340.894,-8.001,-4.42,-11.821,1 +units=m
+no_defs";<br>
<br>
To demonstrate, I've modified the converter in the proj4js homepage to also
have 28193 (Old Israel Grid/Palestine 1923) and 2039 (New Israel Grid).
You can see the demo here: <a
href="http://arkeotech.googlepages.com/Proj4js.htm" target="_blank">http://arkeotech.googlepages.com/Proj4js.htm</a>
<br>
Converting the coordinates 35,31 from 4326 to 2039 works fine, but from 4326 to
28193 just returns 35,31. Looking at the spatial reference page for
28193, you can use the viewer to get an approximation for those coordinates...
it should be somewhere roughly around 149353, 1046172<br>
<br>
Any thoughts?<br>
<br>
Thanks,<br>
<br>
Josh<br>
<br>
<br>
<o:p></o:p></p>
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<p class=MsoNormal>------------------------------------------------------------------------<br>
<br>
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<a href="http://lists.osgeo.org/mailman/listinfo/metacrs" target="_blank">http://lists.osgeo.org/mailman/listinfo/metacrs</a><br>
<o:p></o:p></p>
<p class=MsoNormal style='margin-bottom:12.0pt'><br>
-- <br>
Michael Adair<br>
Senior Software Architect<br>
DM Solutions Group Inc.<br>
<br>
Office: (613) 565-5056 x26<br>
<a href="mailto:madair@dmsolutions.ca" target="_blank">madair@dmsolutions.ca</a><br>
<a href="http://www.dmsolutions.ca" target="_blank">http://www.dmsolutions.ca</a><br>
<a href="http://research.dmsolutions.ca" target="_blank">http://research.dmsolutions.ca</a><br>
<br>
<o:p></o:p></p>
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