[mapguide-users] Generating tiles for google maps

[George McLean]

Was the customization to make a square projection that ran from 85 
degrees south to 85 degrees north?

Thanks

George

Traian Stanev wrote:
> 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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