[MapProxy] Difficulty setting up Custom Projections

Oliver Tonnhofer olt at omniscale.de
Tue Jun 8 03:27:25 EDT 2010


On 07.06.2010, at 21:52, Marc Harter wrote:

> I have this setup in my proxy.yaml file:
> srs:
>    proj_data_dir: "/var/www/mapproxy/srs"
> In that directory I have a file called 'espg' that contains this:
> <103930> +proj=tmerc +lat_0=44.66111111111111  
> +lon_0=-92.63333333333334 +k=1 +x_0=141732.2834645669 +y_0=0  
> +a=6378413.671 +b=6357028.9851403 +to_meter=0.3048006096012192  
> +no_defs <>

That looks good and it works on my system.

> When I try to start my development server I get this stacktrace:
> $ paster serve etc/develop.ini --reload
> [...]
>    return _Proj.__new__(self, projstring)
>  File "_proj.pyx", line 25, in _proj.Proj.__cinit__ (_proj.c:562)
> RuntimeError: no system list, errno: 2

"no system list" means that the projection init file was not found.  
Can you double check that you have a /var/www/mapproxy/srs/epsg file  
that is readable by the user.

If a specific EPSG code is not found, the error should be "no options  
found in 'init' file".

I have to admit that the error messages from pyproj are not very  


Oliver Tonnhofer <olt at omniscale.de>
Omniscale - Dominik Helle, Oliver Tonnhofer GbR
Nadorster Str. 60, 26123 Oldenburg
Tel: +49(0)441/9392774-2 (Fax: 9)

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