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Gabriel Ebner schrieb:
<blockquote cite="mid20060618090656.GG11892@achatina.gabrielebner.at"
type="cite">
<pre wrap="">On Sun, Jun 18, 2006 at 01:38:56AM +0200, Michael Haberler wrote:
</pre>
<blockquote type="cite">
<pre wrap="">In Austria most geodata companies, and the land survey use something called
the "Bundesmeldenetz" projection which is close to EPSG 31287 but not quite.
</pre>
</blockquote>
<pre wrap=""><!---->
Note that this isn't the Bundesmeldenetz, which is a transverse mercator
projection with central meridians 28, 31, and 34 degrees east of Ferro in the
MGI datum.
</pre>
</blockquote>
right.. I noticed after I sent it.. thanks..<br>
<blockquote cite="mid20060618090656.GG11892@achatina.gabrielebner.at"
type="cite">
<pre wrap="">
Small guide to Austrian EPSG codes:
31284 - BMN M28
31285 - BMN M31
31286 - BMN M34
31287 - Lambert (which is what you're probably looking </pre>
</blockquote>
<blockquote cite="mid20060618090656.GG11892@achatina.gabrielebner.at"
type="cite">
<blockquote type="cite">
<pre wrap="">[...] but not quite.
</pre>
</blockquote>
<pre wrap=""><!---->
Apparently PostGIS does not get datum transformation right for these SRS.
You'd just have to add
+towgs84=577.326,90.129,463.919,5.137,1.474,5.297,2.4232
</pre>
</blockquote>
<br>
I got this projection example from a local GIS company, and it seems
to work for data from different sources so far<br>
<br>
the only difference I can discern from EPSG 31287 is +lat_0=48 instead
of +lat_0=47.5<br>
<br>
I'm not a projection expert.. is your parameter set equivalent to this
change in results?<br>
<br>
-Michael<br>
<blockquote cite="mid20060618090656.GG11892@achatina.gabrielebner.at"
type="cite">
<pre wrap="">
Gabriel.
</pre>
<pre wrap="">
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