ABSTRACT
The authors of subsequent chapters discuss techniques designed to elicit knowledge from geographical databases. Considerable insight is often gained when multiple thematic layers are incorporated into the analysis. When such techniques are applied, however, it is assumed that all data:
1 share a common and appropriate geographical referencing system; 2 cover a common and appropriate geographical area; 3 contain non-spatial attribute data of interest; 4 are located on specific computers and in certain directories; and 5 are stored in a format that can be read by the selected analytical software.
