[OpenLayers-Users] Mercator projections in OpenLayers

Nick Whitelegg nick at hogweed.org
Fri Aug 11 11:42:09 CDT 2006


On Thursday 10 Aug 2006 18:24, Arnd Wippermann wrote:
>  Hello,
>
> I dont understand the question. I thought, Openlayers is only an
> environment to generate a request to get tiles from some data provider. Of
> course in the projection the data provider supports. A reprojection is not
> in the scope of openlayers. I dont understand, how it will possible to
> reproject a map with client javascript.

In tile.js, different latitude width tiles are grabbed dependent on latitude. 

I think I must be missing something here. My understanding of WMS map servers 
is that they take a bounding box, width and height and thus are not tied to 
any one projection - with a constant bounding box, the projection will vary 
dependent on width and height. Obviously I'm missing something here; would be 
grateful of any good articles which explain this in more detail.

Thanks,
Nick


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