[postgis-users] Re: new entry for spatial_ref_sys.sql - Austrian "standard" projection

[Gabriel Ebner]

On Sun, Jun 18, 2006 at 01:38:56AM +0200, Michael Haberler wrote:
> In Austria most geodata companies, and the land survey use something called
> the "Bundesmeldenetz" projection which is close to EPSG 31287 but not quite.

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.

Small guide to Austrian EPSG codes:
  31284 - BMN M28
  31285 - BMN M31
  31286 - BMN M34
  31287 - Lambert (which is what you're probably looking for)

> [...] but not quite.

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

  Gabriel.
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