You do this by zooming to an integer zoom level (an arbitrary fixed-scale experiment to see the effect of different values) and defining a point by latitude and longitude.

The Geolocation API, as proposed in the W3C draft, is a high-level interface to location information, such as latitude and longitude, associated with the device hosting the implementation.

The first characteristic field reflects the actions of latitude and height above sea level and landform, and the impact of urban heat island effects.