[MapProxy] ZeroDivisionError in mapproxy-seed

[Oliver Tonnhofer]

On 16.03.2011, at 14:31, Bjoern Platzen wrote:

> Hello Oliver,
> 
> thanks for your reply.
> 
> I changed the definition for the grid, so that it uses EPSG:31466. Now the meter-based min_res and max_res should fit.
> 
> New Grids-definition:
> grids:
>  global_geodetic_sqrt2:
>    srs: 'EPSG:31466'
>    res_factor: 'sqrt2'
>    min_res: 6000000
>    max_res: 2000
>    bbox: [2064052.224579244,4915664.3518403955,4181319.125883109,6140458.009400783]
>    bbox_srs: 'EPSG:31466'
> 
> But I still get the ZeroDivisionError:

Your extent is 2mio meters wide and your min resolution is 6mio m/px. So the extent is less than a pixel and the grid size for that level then gets rounded to 0. I modified the calculation, so that the grid size is at least 1 x 1, to prevent the division errors.

Regards,
Oliver

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