Slide 6 of 29
This is from Worboys’ book.
- What variation has there been in the population density of R’ between 1971 and 1991 ?
- Has the A34 route (road) ever passed through region R’ ?
- Does the A34 currently pass through land that has ever belonged to region R’ ?
These are complex spatial objects that suffer discrete changes with respect to time.
Attributes also change. When is it appropriate to say that an objectr has changed so much that it should have a different identity ? This has to be answered at the application, not a GIS level.
