c# Get Altitude at position

Question

I need to get the altitude of a latitude and longitude position (ground altitude).

I haven't found anything able to do this.

Any ideas?

Thanks!

Answer 1

you can use Shuttle Radar Topography Mission (SRTM) data files, which may be obtained through this URL: https://dds.cr.usgs.gov/srtm/version2_1/SRTM3/

for c# Examples see : https://github.com/itinero/srtm and : https://github.com/alpinechough/Alpinechough.Srtm

and docs : https://dds.cr.usgs.gov/srtm/version2_1/Documentation/

Answer 2

The USGS (US Geological Survey) has an API for this as well that includes a WSDL. http://cumulus.cr.usgs.gov/service_description_elevation.php

Answer 3

Use BING MAP SDK with spatial services (REST) More info here

Answer 4

I would use the Google Elevation API. From C#, use a WebClient to request URLs such as: http://maps.googleapis.com/maps/api/elevation/json?locations=39.7391536,-104.9847034|36.455556,-116.866667&sensor=true

Or download the .Net library.

Answer 5

Check out the The Google Elevation API