Non Standard AUTO NamespaceΒΆ
The WMS standard supports a small number of “automatic” coordinate reference systems that include a user-selected centre of projection. These are specified using:
AUTO:auto_crs_id,factor,lon0,lat0
for example:
CRS=AUTO:42003,1,-100,45
Note
in GeoServer 2.8.x AUTO and AUTO2 namespaces are treated identically.
Note
in GeoServer 2.8.x the factor parameter in the AUTO namespace is ignored. The BBOX parameter to GetMap must therefore be specified in metres.
The WMS standard provide projections with IDs in the range 42001 to 42005.
| ID | Projection |
| 42001 | Universal Transverse Mercator |
| 42002 | Transverse Mercator |
| 42003 | Orthographic |
| 42004 | Equirectangular |
| 42005 | Mollweide (not supported in GeoServer 2.8.x) |
GeoServer also supports some non-standard coordinate reference systems. These are
| ID | Projection |
| 97001 | Gnomonic |
| 97002 | Stereographic |
Note
the auto stereographic projection uses a sphere. It does this by setting the semi minor axis to the same value as the semi major axis.