GeoNames Forum

I want to retrieveout the country code in the same way as the webservice
countrycode is working. From the dumps of the database files it is
unclear for me to find how the countrycode is found based on lat/lon
like in:

http://ws.geonames.org/countrycode?lat=47.03&lng=10.2

We want to implement a service like this locally to avoid load on the
geonames server by calling the webservice.

Does anyone now this algorithm??

Dutchnomad

Hi Duchnomad

The reverse countrycode service is only using the dumps as a fallback. The normal way of operating is to use polygons with the country shapes.

Cheers

Marc

Are these polygons available? Who knows a source?

This file looks like it has what you need judging from the file name :
http://mappinghacks.com/data/cntry98.zip

That looks promising. In what way I can interact with these shape files to find out what country a lat/lon combination is in?

I have only a viewer that shows the countries.

Hi!

I have the same problem as dutchnomad at the moment.

@dutchnomad/ marc: Is there any further information on how to handle these shape files? What I would be more interested in: Where is the polygon data that geonames uses from? Is there any way to get this data/ are the polygon coordinates published by geonames?

Please advice.

Thanks,
Daniel