changes that he might want to make in the 
process. Now, we interactively work with 
workstations and dynamically change 
programs for immediate execution. The 
sophisticated and unsophisticated analyses 
being performed in short timeframes would 
have taken years to run just 15 years ago. 
The advances in the computing industry can 
be combined with human interaction 
methodologies of visualization and the spatial 
data management capabilities of a GIS to 
give a dynamic and virtual 3 D spatial data 
environment. As this environment becomes 
more and more a real time presentation, 
display, and interaction capability, our whole 
approach to spatial analysis may change. 
The potential for the integration of GIS with 
a virtual reality interface is almost here. 
120 
  
  
  
  
  
  
  
  
  
  
  
  
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