Show Altitude (Query for elevation globally)

Show Altitude: It's very easy to query for the altitude anywhere on earth. To tap in the map or input the latitude,longitude,you'll get the altitude immediately.

- Two query mode: Just tap in the map,the altitude will be shown immediately. Or you can input the latitude and longitude to query the altitude.
- You can query for the alititede of a point,or the altitude of a series of points,which will be shown graphically.
- Annotation can be dragged in the map.
- two unit: meter/feet.