[OSGeo-Discuss] parsing coordinates

Arnulf Christl arnulf.christl at wheregroup.com
Tue Apr 21 07:39:43 PDT 2009


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pere roca ristol schrieb:
> hi all,
> 
> 
> I'm developing a webapplication that let's user upload their point data and
> play with it.
> 
> It currently works with lat/long in a CSV with this format (eg: *0.44, -79.9
> *) but we find users with some of these also valid and acceptable ways to
> write geographic coordinates:
> 
>    - 40:26:46N,79:56:55W
>    - 40:26:46.302N 79:56:55.903W
>    - 40°26'21"N 79°58'36"W
>    - 40d 26' 21" N 79d 58' 36" W
>    - 40.446195N 79.948862W
>    - 40.446195, -79.948862
>    - 40° 26.7717, -79° 56.93172
> 
> 
> I'm aware that parsing and interpreting free-text coordinate descriptions is
> quite complex, maybe someone knows a script (or a remote service) that does
> a similar job?
> 
> 
> It would be very helpful.
> 
> Thanks!
> 
> 
> Pere

Potentially adding to your woes you should take into account that people
mix up axis order. It is a well established traditional fight between
developers, geodesists and the rest of the world. This page [1] sums up
the main issue. If you find a script that dares to deal with this, feel
free to add it as a link to that page.

Best regards,
Arnulf.

[1] http://wiki.osgeo.org/wiki/Axis_Order_Confusion
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