GeoNames Forum

Hello,

I'm the author of the opensource GPX Editor. So far the program can use the GeoNames webservices to get the altitude of a waypoint but some user asked if it would be possible for an entire track.
My answer was that it would represent a big amount of web traffic (some tracks can have more than 10000 coordinates) and that it wouldn't be very kind to get all this load on what is essentially a free service.

Is there a solution ? A better way of querying data for a list of points ?
I would like to avoid to setup my own GeoNames mirror if possible, and of course keep all this free.

Hi Pixelk

The text version of the SRTM3 service also accepts a list of lat/lng for the parameters 'lats' and 'lngs'. On the free server the number of points per call is limited to 20.

Best

Marc

Marc,
Could you explain what the format of the request is to recieve multiple altitudes.

I've tried
http://ws.geonames.org/srtm3?lat=50.01&lng=10.2&lat=51.01&lng=11.2
http://ws.geonames.org/srtm3?lat=50.01&lng=10.2&lat1=51.01&lng1=11.2
http://ws.geonames.org/srtm3?lat=50.01,51.01&lng=10.2,11.2

Unfortunately, I can't find any documentation on exactly HOW to do this.

http://ws.geonames.org/srtm3?lats=50.01,51.01&lngs=10.2,11.2