[MapProxy] limiting image width and height in WMS requests?

[Christian Willmes]

Hi Oliver,

thanks for the hint with the projections. I used EPSG:4236, because AGS
does not know EPSG:900913. But due to a bit of googleing on this topic I
found, that EPSG:102113 equivalent to EPSG:900913.

This config works now:

  AGSBASE:
    type: wms
    wms_opts:
      version: 1.3.0
      featureinfo: true
      legendgraphic: true
    supported_srs: ['EPSG:102113']
    req:
      url:
http://134.95.150.250:8399/arcgis/services/online/mapserver/wmsserver?
      layers: 0,1,2,3,4,5,6,7,8,9,10,11


... and it is really fast now. :)

regards,
Christian

On 17.03.2011 08:07, Oliver Tonnhofer wrote:
> 
> On 16.03.2011, at 15:59, Christian Willmes wrote:
> 
>> On 16.03.2011 15:31, Oliver Tonnhofer wrote:
>>
>>>
>>> The size depends on your tile size, meta size and meta buffer. 1184 is 256x4+2x80, but the 2478 is odd. Is that your complete configuration?
>>>
>>
>> No it isn't the complete configuration, the complete mapproxy.yaml is
>> attached.
> 
> 
> Wait, the source gets transformed from EPSG4326 to EPSG:900913. In this case MapProxy increases the request image size to get square pixels and to get at least the required resolution target (in both axis). With EPSG:4326 you have large distortions in the first levels and for regions far from the equator.
> 
> You can try to reduce the meta size to [2, 2] and then seed the first levels before changing it back.
> 
> Regards,
> Oliver


-- 
Christian Willmes
AG GIS & Fernerkundung      | GIS & RS Group
Geographisches Institut     | Institute of Geography
Universität zu Köln         | University of Cologne
Tel.: +49 (0)221 470 6234
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