The altimeter package acts as a wrapper around the Google Elevation API. From the API’s official documentation:
The Elevation API provides elevation data for all locations on the surface of the earth, including depth locations on the ocean floor (which return negative values). In those cases where Google does not possess exact elevation measurements at the precise location you request, the service will interpolate and return an averaged value using the four nearest locations.
With the Elevation API, you can develop hiking and biking applications, mobile positioning applications, or low resolution surveying applications.
We’d love you to contribute to the development of altimeter. If you’d like to help us here are some of the things you can do: