[mapguide-users] cannot read coordinate system from mysql database

[Hardt]

Hi,

I remembered from reading about spatial extension in mysql, and I am not
sure that you can use the coordinate system stored in mysql
"out-of-the-box".


SRID - A Spatial Reference Identifier (SRID) defines the properties of the
coordinate system. MySQL stores the SRID of any spatial objects and it can
be extracted, but it is not used and the coordinate system is always
supposed to be planar.

http://dev.mysql.com/tech-resources/articles/4.1/gis-with-mysql.html
http://dev.mysql.com/tech-resources/articles/4.1/gis-with-mysql.html 

I am not sure if I answered your question, but that may help you.

Cheers,

Hardt


thundercat wrote:
> 
> I'm using ogr2ogr FW Toolkit to load and store spatial data (of ESRI type)
> into mysql. However when read the spatial data from mapguide studio, it
> cannot recognize the coordinate system of that  spatial data which is WGS
> 84 and recognize it as unknown. Therefore i overide it , and set the
> coordinate system as WGS 84. However, when previewing the map, it display
> an incorrect coordinate system. anyone can solve this ?. thanks
> 

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