[mapguide-users] Generating tiles for google maps

[Traian Stanev]

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.


Traian


> -----Original Message-----
> From: mapguide-users-bounces at lists.osgeo.org [mailto:mapguide-users-
> bounces at lists.osgeo.org] On Behalf Of George McLean
> Sent: Wednesday, December 19, 2007 11:26 AM
> To: MapGuide Users Mail List
> Subject: Re: [mapguide-users] Generating tiles for google maps
>
> I have been trying to get this working as well. My approach has been to
> use data between 85 degrees north and 85 degrees south in a Mercator
> projection since this is what I believe Google maps uses. I am still
> not
> sure if this is the right approach as I am still working on it.
>
> To get the tiles within your bounding box, I would create the box and
> then zoom to the corners. The tiles for that region will be created and
> this will help you figure out the rows and columns for each corner at
> each zoom level. Once you know the zoom levels and row/column
> boundaries
> you can specify these parameters in the call to the tiling engine.
>
> George McLean
>
> azpublic wrote:
> >
> > Hi,
> >
> >
> >
> > I'm looking for a way to generate custom tiles for google maps or Ms
> > Live maps / Virtual earth using Mapguide OS.
> >
> >
> >
> > I've created my map using studio and I'm now thinking about using the
> > Automated tiling engine from WSD to generate the tiles.
> >
> >
> >
> > My main problem is about which scale to use to have my custom tiles
> > match with google maps tiles. What are the mapguide scales I need to
> > use for specific google maps zoom levels?
> >
> >
> >
> > Moreover I want to generate tiles only for a specific lat/lon
> bounding
> > box. Is this possible using the Tiling engine?
> >
> >
> >
> > Any help appreciated !
> >
> >
> >
> >
> >
> >
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