LAYER 1 LAYER 2 
  
SZ 
po & » 
N < x = 
TS 
   
  
  
  
OBSERVER'S UNCERTAINTY 
   
  
  
CERTAIN 
REASONABLY CERTAIN 
MODERATELY CERTAIN 
77/1 | ZA NOT TERRIBLY 
T | CERTAIN 
GG 
  
5 
  
  
  
  
Figure 3: Categorical maps, Layer 1 & Layer 2 with their respective uncertainty displays 
according to the observer’s terminology. 
  
  
  
  
  
  
  
Figure 4: Overlay map L1L2 
  
  
  
  
  
  
MAPPING IN MAPPING OUT 
OBSERVER'S UNCERTAINTY USER'S ASSESSMENT 
linguistic xE linguistic xE 
certain 1 OR 0.9 scheme A scheme B 
reasonably certain| 0.8 US 
moderately certain| 0.7 OR 0.6 [good L'OR 0.9 OR 0.8 + OR 0.9 
not terribly 0.6 OR 0.5 [acceptable 0.7 OR 0.67 0.8 OR 0.7 
certain unacceptable (below) (below) 
  
  
  
  
  
  
  
Table 3: Mappings of observer’s uncertainty and user’s assessment 
764