[mapguide-users] Generating tiles for google maps

[Kenneth, GEOGRAF A/S]

Unless you really need the description, you can just modify
<Metadata><MapDescription>GoogleTiles</MapDescription></Metadata>
to:
<Metadata />

Regards, Kenneth, GEOGRAF A/S



George McLean skrev:
> I have have been trying to modify my map using mapagent. I have 
> exported the resource content and then edited the coordinate system to 
> use the WKT representation of the projection. I can not seem to get 
> past an error in the Metadata tag:
>
> 'Parser message: In element Metadata: Can not have element children 
> within a simple type content. '
>
> If I remove the metadata, I get an exception error when trying to open 
> the map in Studio. My XML is below:
>
> <MapDefinition xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
> xmlns:xsd="http://www.w3.org/2001/XMLSchema" 
> xsi:noNamespaceSchemaLocation="MapDefinition-1.0.0.xsd">
> <Name>New Map</Name>
> <CoordinateSystem>
> PROJCS["unnamed",GEOGCS["unnamed 
> ellipse",DATUM["unknown",SPHEROID["unnamed",6378137,0]],PRIMEM["Greenwich",0],UNIT["degree",0.0174532925199433]],PROJECTION["Mercator_2SP"],PARAMETER["standard_parallel_1",0],PARAMETER["central_meridian",0],PARAMETER["false_easting",0],PARAMETER["false_northing",0],UNIT["Meter",1],EXTENSION["PROJ4","+proj=merc 
> +a=6378137 +b=6378137 +lat_ts=0.0 +lon_0=0.0 +x_0=0.0 +y_0=0 +k=1.0 
> +units=m +nadgrids=@null +wktext  +no_defs"]]
> </CoordinateSystem>
> <Extents>
> <MinX>0</MinX>
> <MaxX>0</MaxX>
> <MinY>0</MinY>
> <MaxY>0</MaxY>
> </Extents>
> <BackgroundColor>FFFFFFFF</BackgroundColor>
> <Metadata><MapDescription>GoogleTiles</MapDescription></Metadata>
> </MapDefinition>
>
>
> Is there something obvious that I am missing?
>
> Thanks for the help!
>
> George
>
>
>
> Jason Birch wrote:
>> Specifics of this projection are documented at SpatialReference.org:
>>
>> http://spatialreference.org/ref/user/google-projection/
>>
>> And Charlie Savage has a good write-up of why it's not just Mercator:
>>
>> http://cfis.savagexi.com/articles/2006/05/03/google-maps-deconstructed
>>
>> Note, I have no idea how to add custom projections like this to Proj.4.
>> I wonder if you would be able to add the WKT representation directly to
>> your map?
>>
>> http://spatialreference.org/ref/user/google-projection/ogcwkt/
>>
>> Jason
>> -----Original Message-----
>> From: Traian Stanev
>> Subject: RE: [mapguide-users] Generating tiles for google maps
>>
>> Yes, you have to use Mercator. To make the tiles match perfectly across
>> the whole world, you will need to use a custom Mercator rather than the
>> default one in MapGuide (last time I did it, I had to hardcode the
>> projection into MapGuide). I think that if you restrict yourself to a
>> small region, you can get away with the Mercator that already exists in
>> MapGuide and some tiny translation tweaks to make it all align
>> perfectly.
>> _______________________________________________
>> mapguide-users mailing list
>> mapguide-users at lists.osgeo.org
>> http://lists.osgeo.org/mailman/listinfo/mapguide-users
>>
>>
>>   
>
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