Taking into consideration the terrain factor of determining sites for physical development project, a digital elevation model (DEM) of the study area was constructed using coordinate values (x,y,z) obtained from the contour map of the university. This was used to generate a slope map of the university to compute the gradient of likely places that may be selected for new development project (Figure 9a, b).
In implementing an SDSS, Daniel (1992) emphasized that in building the system, user friendly and interactive graphical interface that even a layman in computer could understand must be used. To achieve this, the interface to all the components of the SDSS was designed to use buttons, icons and text boxes with capabilities for iterative queries and which the user can easily understand. Figure 10 shows the parameter entering mode of the SDSS.