MODELING AND VISUALIZING MULTIPLE SPATIAL UNCERTAINTIES

This paper presents the results of research into the modelling and vis ualization of multiple types of uncertainty - each exhibiting distinct spatial characteristics. Slope stability modelling is utilized as a v ehicle to bring together uncertainties in categorical spatial data and continuous spatial data. A variety of static visualization methods ar e discussed, as well as the implications of using an interactive anima ted display to explore multiple realizations of a continuous surface. The results indicate that careful definitions of allowable uncertainty , and the implications thereof, are required to calibrate an interacti ve animation that will be utilized by non-specialists. It is argued th at this holds particularly true in the situation of risk management de cisions. (C) 1997 Elsevier Science Ltd.