+ 1751 — 
Colorado/Tom and Miller 
FOREST SITE CLASSIFICATION 
  
    
  
  
100 
MSS7  MSS5 
spaces VF 
90 + INSOLATION e" "ASPECT 
VEGETATION 
-^ L MSS-4 o 
s 9 — | À COVER 
z 1 
Oo y 
E» SLOPE s 
a INSOLATION 
3 9' ASPECT 
60 = 
< *? SLOPE 
Oo 
id MSS-6 A 
È a e^ VEGETATION 
o COVER 
9 ELEVATION 
“r € LANDSCAPE VARIABLE 
® LANDSAT VARIABLE 
0 1 n L 1 L 1 À L 3 
1 2 3 4 5 6 7 8 9 
VARIABLE ADDED 
FIGURE 6.3. TRAINING SET ACCURACY OF SITE INDEX CLAS- 
SIFICATION WITH AND WITHOUT LANDSAT IMAGERY. The 
vertical axis represents the percentage of 37 cells correctly reclas- 
sified into their one of ten site index classes. The lower curve 
represents the training set accuracy achieved when the classification 
is restricted to the five map-derived variables. The upper curve re- 
presents the improved training set accuracy obtained when five 
variables are selected by stepwise discriminant analysis from among 
nine variables. Note: the total of nine variables was made available 
by adding the four LANDSAT MSS bands to the five map-derived 
variables.