[MapProxy] 512x512 tile service from 256x256 tile source

[Radim Blazek]

I have to define also a new layer however, which is ugly.

Radim


On Thu, Sep 1, 2016 at 5:24 PM, Radim Blazek <radim.blazek at gmail.com> wrote:
> Using cache as source of another cache with different tile size works! I.e.:
>
> caches:
>   osm_cache:
>     grids: [webmercator]
>     sources: [osm_source]
>
>   osm_cache_512:
>     grids: [webmercator_512]
>     sources: [osm_cache]
>
>
> Great, thanks.
>
> Radim
>
> On Thu, Sep 1, 2016 at 3:58 PM,  <pavlicek.david at gmail.com> wrote:
>> Hi Radim,
>>
>> I think this is not possible. I quickly look at the source code
>> (https://github.com/mapproxy/mapproxy/blob/7ade9e1af398e5408bb6f5af132755e63aeec9dc/mapproxy/source/tile.py#L45
>> )and there is only check if requested and source tile sizes are equal. If
>> not, exception is raised. So there is no logic for stitching smaller tiles
>> to larger one.
>>
>>
>>
>> Maybe you should try to use 2 caches. One cache with standard (small) tiles
>> and one with large tiles. Then you can try to use small tile cache as source
>> for large tile cache. I don’t try this, its just quick idea…
>>
>>
>>
>> David
>>
>>
>>
>> Odesláno z aplikace Pošta pro Windows 10
>>
>>
>>
>> Od: Radim Blazek
>> Odesláno:čtvrtek 1. září 2016 13:54
>> Komu: mapproxy at lists.osgeo.org
>> Předmět: [MapProxy] 512x512 tile service from 256x256 tile source
>>
>>
>>
>> I would like to get 512x512 tiles from a source which has 256x256
>>
>> tiles, here is my config:
>>
>>
>>
>> ------------------------------------------------------------------------------------------------------------------------
>>
>> services:
>>
>>   tms:
>>
>>     use_grid_names: true
>>
>>     srs: ['EPSG:3857']
>>
>>
>>
>> layers:
>>
>>   - name: osm
>>
>>     title: OSM
>>
>>     sources: [osm_cache]
>>
>>
>>
>> caches:
>>
>>   osm_cache:
>>
>>     grids: [webmercator_512]
>>
>>     sources: [osm_source]
>>
>>
>>
>> sources:
>>
>>   osm_source:
>>
>>     type: tile
>>
>>     grid: webmercator
>>
>>     url: http://tile.openstreetmap.org/%(z)s/%(x)s/%(y)s.png
>>
>>
>>
>> grids:
>>
>>     webmercator:
>>
>>       base: GLOBAL_WEBMERCATOR
>>
>>
>>
>>     webmercator_512:
>>
>>       base: GLOBAL_WEBMERCATOR
>>
>>       tile_size: [512, 512]
>>
>>       res: [78271.516964, 39135.758482, 19567.879241, 9783.9396205 ]
>>
>> ------------------------------------------------------------------------------------------------------------------------
>>
>>
>>
>> But this request: /tiles/osm/webmercator_512/0/0/0.png returns: "tile
>>
>> size of cache and tile source do not match: (256, 256) != (512, 512)"
>>
>>
>>
>> Making 512x512 tile service from WMS source or higher resolution WMS
>>
>> service from 256x256 tile source both work.
>>
>>
>>
>> So what is the trick to get 512x512 tiles?
>>
>>
>>
>> Radim
>>
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>>
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>>
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>>
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>>
>>