Programming GPS and OpenStreetMap Applications with Java

Chapter 5

From Geography

to Cartography

5.1 Introduction

The roaf.gps package was created to manage spatial coordinates and to

keep universal time. The GPSunit can be attached to any real object and

it reflects its motion. From a developer’s point of view, it is very helpful

to wrap the GPS number-crunching into a single component. On the other

hand, human perception is dominated by visual information, and it is more

intuitive to display traces on a map rather than looking at large amounts

of decimal numbers.

Cartography is the science of creating two-dimensional plane maps. This

process can be realized with many different forms of projections. Each

projection ...