Vedr.: [mapguide-users] Re: Coordinate system problem validating a map

Jason Birch jason at jasonbirch.com
Thu Nov 18 11:11:51 EST 2010


Well Known is a bit of a misnomer for this stuff.  Most tools (MapInfo,
ESRI, etc) have their own subtly different flavours.

You should be able to set an override Coordinate System on your data source
to avoid this, but I haven't tried it myself to see if Maestro reads the
override.

Jason

On 18 November 2010 07:24, Klaus Leth Pedersen wrote:

>
> Thank you Jackie,
> You are absolutely correct.
> When i check the coordinate systems in Maestro the WKT code says for the
>
> Datasource (MapInfo .tab file) :
> PROJCS["unnamed",GEOGCS["unnamed",DATUM["Euref_98",SPHEROID["GRS
>
> 80",6378137,298.257222101],TOWGS84[0,0,0,-0,-0,-0,0]],PRIMEM["Greenwich",0],UNIT["degree",0.0174532925199433]],PROJE
>
> CTION["Transverse_Mercator"],PARAMETER["latitude_of_origin",0],PARAMETER["central_meridian",9],PARAMETER["scale_fact
>
> or",0.9996],PARAMETER["false_easting",500000],PARAMETER["false_northing",0],UNIT["Meter",1.0]]
>
> and for the Map coordinatsystem it is
>
> PROJCS["ETRS89.UTM-32N",GEOGCS["LL-ETRF89",DATUM["ETRF89",SPHEROID["GRS1980",6378137.000,298.25722210],TOWGS84[0.0000,0.0000,0.0000,0.000000,0.000000,0.000000,0.00000000]],PRIMEM["Greenwich",0],UNIT["Degree",0.017453292519943295]],PROJECTION["Transverse_Mercator"],PARAMETER["false_easting",500000.000],PARAMETER["false_northing",0.000],PARAMETER["central_meridian",9.00000000000000],PARAMETER["scale_factor",0.9996],PARAMETER["latitude_of_origin",0.000],UNIT["Meter",1.00000000000000]]
>
> I just don't understand that when I set the Coordinatsystem (ESPG code
> 25832) in MapInfo it gives something different i Maestro ?
>
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.osgeo.org/pipermail/mapguide-users/attachments/20101118/ddad7af2/attachment.html


More information about the mapguide-users mailing list