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<font face="Times New Roman, Times, serif">Hi Howard,<br>
<br>
This is a problem, as OpenLayers looks by default to
spatialreference.org when a projection has not been explicitly
defined in the javascript code. This happens for example with the
"displayProjection" item in the map controls. You get the wrong
coordinates without being told that someting isn't right.<br>
<br>
Is it very difficult to synchronize spatialreference.org with
(e.g.) the proj epsg file? If I remember correctly, Frank has an
automated updated procedure from the epsg database. Could that
procedure be extended to spatialreference.org? I would be willing
to put some effort in it, as I am working on a geographical
indexing system of our map library, and there are many historical
maps in it with projections that are not in the epsg database.
Spatialreference.org would be an ideal system for these maps, but
it would only be workable if all information were up to date.<br>
<br>
Jan<br>
<br>
</font>
<div class="moz-cite-prefix">On 12/31/2012 04:19 PM, Howard Butler
wrote:<br>
</div>
<blockquote
cite="mid:D8D58097-FE48-4C21-8CCD-5CA41A3CD67B@gmail.com"
type="cite">
<pre wrap="">
On Dec 31, 2012, at 7:13 AM, Jan Hartmann <a class="moz-txt-link-rfc2396E" href="mailto:j.l.h.hartmann@uva.nl"><j.l.h.hartmann@uva.nl></a> wrote:
</pre>
<blockquote type="cite">
<pre wrap="">Can anyone tell me how the references at spatialreference.org are related to the proj-strings of the official proj library? Nowadays proj includes lots of WGS-84 shifts, and at least one of them (28992, Dutch RD) is not propagated to spatialreference.org.
</pre>
</blockquote>
<pre wrap="">
The relationship to spatialreference.org is one of being simply out-of-date. sr.org has not been updated in quite a while, and it needs a champion to come along and bring things forward. sr.org gets its definitions from proj.4/GDAL as well as GeoTools. These have not been refreshed in at least a couple of years -- time for more than one EPSG database drop and the inclusion of datum shifting description in proj.4.
Hope this helps,
Howard
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