Imagine that we have just four maps available and that this (map1) is the smallest scale / largest coverage:-
The three boxes illustrate the positions and coverage of the other three maps.
Now consider a journey with the GPS running from point (1) to point (3) to point (4). Suppose we have set the option 'Jump to Max Resolution' on :-
As we progressed on our journey we would start on map1, switch to map3 at the edge of map2/map3, briefly switch on to map2 when we ran off the edge of map3, then finally end up on map4 near the end of our trip.
Last Updated 23 July 1999
[ Home | Next ]