The Line Elevation .NET Sample Code demonstrates how to access a straight line crossing a peak, download DEM files, get a line elevation, compute metrics to get distance from the origin, and simplify a line with a 50m resolution.
Do you fancy yourself checking in for dinner with Foursquare founder, Naveen Selvadurai wearing a Foursquare Champion Belt? The location-sharing platform has thrown in that opportunity as part of its unique Round-The-World, Round-The-Clock Hackathon. The event plans to bring together developers to collaborate locally and globally to build cool applications using the Foursquare API and win some cool prizes too.
A little over a month off of its pricing structure changes, location database-as-a-service company SimpleGeo has updated its SimpleGeo Places API with more data based on an earlier partnership with Factual. In addition to new data, there are new ways to access it, as well as some changes to the structure of the data returned, so if you've already built on the API you will want to take note.
Online mapping pioneer MapQuest just launched a new local site to explore 50,000 U.S. neighborhoods. MQVibe uses the MapQuest API to display neighborhood shapes and highlighted places. The MQVibe API, while not officially launched, is used by the site itself and appears available externally.