[MapProxy] Reprojecting to EPSG:4326 cuts data at prime meridian.

[Oliver Tonnhofer]

Hi Marc,

great to hear that you found a solution.

The mis-transformed bbox [600096.399, -5125675.606, 8172104.858, 19478127.863] gets clipped with the [420000, 30000, 900000, 350000] bbox and so MapProxy only returns images within [600096.399, 30000, 900000, 350000].

A workaround would be to convert all coverages to a global SRS (e.g. EPSG:4326) on loading. Not sure if this has any downsides. 

Regards,
Oliver

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




> On 09.09.2015, at 19:00, Marc Monnerat <procrastinatio at gmail.com> wrote:
> 
> Hello,
> 
> I solved the case.
> 
> I did set the source extent to an area larger than the actual data extent ( which is  [420000, 30000, 900000, 350000], about [5,43,11,47] in WGS1984), but much smaller than the global geodetic bbox (-180.0, -90.0, 180.0, 90.0) and in specify it in WGS1984 (important).
> 
> 
> sources:
>  ch.are.alpenkonvention_20090101_source:
>     coverage:
>       bbox: [0, 40, 20, 50]
>       bbox_srs: EPSG:4326
>     grid: swisstopo-pixelkarte
>     transparent: true
>     type: tile
>     url: http://wmts6.geo.admin.ch/1.0.0/ch.are.alpenkonvention/default/20090101/21781/%(z)d/%(y)d/%(x)d.%(format)s
> 
> 
> Gruss
> 
> Marc
> 
> 
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