+ 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.