ABSTRACT

Degrees............................................................................................ 142 8.3.2 Conversion of Displacement in Given Units to Longitude

Degrees............................................................................................ 143 8.4 Calculate Latitude of Masked Point............................................................. 144 8.5 The Projected Map ....................................................................................... 144 References .............................................................................................................. 146

We show how to mask a set of locations defined by longitude and latitude in decimal degrees. All locations will be displaced from their true locations using a random function that places each point at any equally likely location within r units of its true location. The unit can be miles, kilometers, meters, or feet. In the demonstration, we show the process and result in miles, although we provide formulae to allow the conversion to kilometers, meters, or feet into longitude and latitude in decimal degrees if the unit is in kilometers, meters, or feet.