[MapProxy] configuring tiled WMS source

[Oliver Tonnhofer]

On 08.03.2011, at 23:47, Stephan Knauss wrote:

> Hi Oliver,
> On 07.03.2011 08:06, Oliver Tonnhofer wrote:
>> 
>> On 06.03.2011, at 22:48, Stephan Knauss wrote:
>>> I try to get the Landsat layers. http://onearth.jpl.nasa.gov/tiled.html
> 
>> You need to configure a cache with a grid that is identical to your tiled source (bbox, resolutions, tile size) and disable meta tiling. MapProxy will then request WMS requests that are aligned to the tile grid of that service, similar to WMS-C.
> I appear too stupid to manage this configuration. would you mind to provide some copy-paste example?
> 
> Having
>    minimize_meta_requests: false
> in the cache section had no effect.

That's something different.

> with the global
>     meta_size: [1, 1]
> it requested smaller areas. But still not the size required by the server.

You also need to set the meta_buffer to 0. Sorry, forgot to mention that.

> Hot can I tell it the grid locations? Nasa specifies the top left coordinate. the initial box is 256 degrees wide. For each zoom The grid is half that value.
> The documentation says something about resolutions. But for meter per pixel I would need the projection, right? a degree at the equator is a lot more than near the poles.
> 
> So these are valid tiles, some configuration hints really appreciated.
> 
> http://wms.jpl.nasa.gov/wms.cgi?request=GetMap&layers=global_mosaic&srs=EPSG
> :4326&width=512&height=512&bbox=-180,-166,76,90&format=image/jpeg&version=1.
> 1.1&styles=visual
> 
> 128
> http://wms.jpl.nasa.gov/wms.cgi?request=GetMap&layers=global_mosaic&srs=EPSG
> :4326&width=512&height=512&bbox=76,-38,204,90&format=image/jpeg&version=1.1.
> 1&styles=visual
> 
> 64
> http://wms.jpl.nasa.gov/wms.cgi?request=GetMap&layers=global_mosaic&srs=EPSG
> :4326&width=512&height=512&bbox=76,-38,140,26&format=image/jpeg&version=1.1.
> 1&styles=visual

Hmmm, the first looks like 256 deegrees/px. So the complete BBOX is -180,-166,332,90?! Can you try that as the grid bbox?

Regards,
Oliver

-- 
Oliver Tonnhofer    | Omniscale GmbH & Co KG    | http://omniscale.de
http://mapproxy.org | https://bitbucket.org/olt