[fdo-internals] PostGIS and Spatial context question

[Orest Halustchak]

Hi Bruno,

The spatial context should also have the coordinate system wkt string. This information is used to look up the corresponding coordinate system definition in the Mentor catalog.

Thanks,
Orest.

-----Original Message-----
From: fdo-internals-bounces at lists.osgeo.org [mailto:fdo-internals-bounces at lists.osgeo.org] On Behalf Of Bruno Scott
Sent: Wednesday, April 09, 2008 3:51 AM
To: fdo-internals at lists.osgeo.org
Subject: Re: [fdo-internals] PostGIS and Spatial context question


Forgot something
Using Mapguide Studio 2009 it works ok
See Screen capture
http://www.nabble.com/file/p16581517/AddDataConnection.jpg


Bruno Scott wrote:
>
> PostGIS store its metadata in a table called geometry_columns
> For each of the spatialy enabled table we can specify a srid in this
> geometry_columns table.
> For PostGIS this srid is an integer that reference a coordinate system
> definition in a table called spatial_ref_sys.
>
> The actual implementation of the PostGIS provider that Matheus did, return
> something like
> PostGIS_SRID as spatial context ( where SRID is replaced by the proper
> srid integer )
> When i try to connect to PostGIS within Map2008 or Map2009, Map display an
> "Unknown" spatial context
> see screen capture
>  http://www.nabble.com/file/p16581335/AddDataToMap.jpg
>
> Is it normal?
> How map is suppose to know how to translate a PostGIS srid to a Mentor
> one?
>
> Bruno
>

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