VER 
age 
ver 
ents 
va- 
ed 
tional | 
66.7 
83.3 
79.7 
74.0 
  
  
  
Thailand/Miller, Nualchawee and Tom 
  
  
  
  
  
(a) using rectangular (b) using aspect oriented rectangular 
training sets training sets 
  
(c) using grid sampled 
training sets 
FIGURE 7.8. LAND COVER CLASSIFICATION MAPS COMPUTED USING THREE TYPES OF 
TRAINING SETS AND 11 LANDSAT AND MAP-DERIVED VARIABLES. Each display emphasizes 
the area of shifting cultivation in black. All 3 classifications were computed using stepwise linear dis- 
criminant analysis with apriori probabilities of land cover occurrence. The 11 variables were the 4 
LANDSAT MSS bands, the 4 physiographic variables and the 3 cultural features variables.