[MapProxy] Multiple tile size configurations per projection

[Oliver Tonnhofer]

Hi,

> On 31.08.2016, at 19:00, Smodey, Jack R (DNR) <jack.smodey at alaska.gov> wrote: 
> We’re trying to create a configuration that will serve up both 256x256 and 512x512 tiles sizes for the global webmercator projection. Our clients are making requests using WMS. Is this possible using the same layer name? We’re using mapproxy-1.8.2.


Do the clients make tiled WMS requests? MapProxy will use the first grid for WMS requests.
For WMTS, you can serve multiple tile grids for the same layer with the new tile_sources option:
https://mapproxy.org/docs/nightly/configuration.html#tile-sources


Regards,
Oliver

-- 
Oliver Tonnhofer  | Omniscale GmbH & Co KG  | http://omniscale.com
OpenStreetMap WMS and tile services         | http://maps.omniscale.com





> Here is an example configuration:
>  
> globals:
>   cache:
>     base_dir: /mnt/giscache/mapproxy/devtesting/
> services:
>   demo:
>   kml:
>     use_grid_names: true
>   tms:
>     origin: nw
>     use_grid_names: true
>   wms:
>     md:
>       abstract: 'This is the Alaska DNR MapProxy WMS Server'
>       title: 'DNR Mapproxy WMS Proxy'
>     use_grid_names: true
> layers:
>   - name: "dnr:MV_BOROUGH"
>     sources: ["dnr:MV_BOROUGH_cache"]
>     title: 'Borough Boundary'
> sources:
>   "dnr_MV_BOROUGH_wms":
>       req:
>         layers: dnr:MV_BOROUGH
>         transparent: true
>         url: ******************************
>       type: wms
>       wms_opts:
>         legendgraphic: true
> caches:
>   "dnr:MV_BOROUGH_cache":
>       grids: [GLOBAL_WEBMERCATOR, webmercator512]
>       sources: ['dnr_MV_BOROUGH_wms']
> grids:
>   webmercator256:
>     base: GLOBAL_WEBMERCATOR
>     num_levels: 35
>     res_factor: sqrt2
>     tile_size:
>       - 256
>       - 256
>   webmercator512:
>    base: GLOBAL_WEBMERCATOR
>     num_levels: 35
>     res_factor: sqrt2
>     tile_size:
>       - 512
>       - 512
>  
> I’ve tried adding separate caches for each gird but it seems to stick with just one tile size upon initialization. I will get a service exception asking me to use the proper tile size if I try requesting the other. Any ideas?
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