ACTUAL // CASES PREDICTED GROUP MEMBERSHIP 
GROUP 
1 
2 
3 
4 
5 
6 
Unit 1 
Levee 
201 
78 
38.8% 
7 
3.5% 
20 
10.0% 
36 
17.9% 
54 
26.9% 
6 
3.0% 
Unit 2 
Point Bar 
170 
4 
2.4% 
1 00 
58.8% 
1 0 
5.9% 
16 
9.4% 
33 
19.4% 
7 
4.1% 
Unit 3 
Mud Flat 
200 
3 
1.5% 
3 
1 .5% 
99 
49.5% 
22 
11.0% 
30 
15.0% 
43 
21.5% 
Unit 4 
Bog Marsh 
289 
9 
3.1% 
1 9 
6.6% 
21 
7.3% 
172 
5 9.5% 
68 
2 3.5% 
0 
0.0% 
Unit 5 
Shrubbed 
Basins 
220 
1 2 
5.5% 
9 
4.1% 
4 
1.8% 
47 
21 .4% 
148 
67.3% 
0 
0.0% 
Unit 6 
Open Water 
205 
0 
0.0% 
9 
4.4% 
22 
10.7% 
2 
1 .0% 
0 
0.0% 
172 
83.9% 
Percentage of cases correctly classified: 59.8%. 
ACTUAL GROUP // CASES PREDICTED GROUP MEMBERSHIP 
1 
2 
3 
6 
Unit 1 
Levee, Muskeg 
Shrubbed Basin 
710 
678 
9 5.5% 
18 
2.5% 
8 
1.1% 
6 
0.8% 
Unit 2 
Point Bar 
170 
76 
44.7% 
85 
50.0% 
4 
2.4% 
5 
2.9% 
Unit 3 
Mud Flat 
200 
77 
3 8.5% 
3 
1.5% 
103 
51 . 3% 
1 7 
8.5% 
Unit 6 
Open Water 
205 
9 
4.4 % 
6 
2.9% 
20 
9.8% 
170 
8 2.9 % 
Percentage of cases correctly classified: 80.62%. 
Figure 2: Confusion matrices for DISCRIMINANT analysis of 
1974 image with original units (top) and grouped 
units (bottom). 
The images resulting from processing of a 512 x 512 pixel 
area of the 1974 and 1980 Images are shown in Figure 3. 
This area is slightly different than the previous six sub- 
areas used; 148 rows of pixels at the western edge of sub- 
area 1 are not shown and the northwest corner (not previ 
ously included) is shown. The reason for this change was 
the limitation of the AED monitor which was used to output 
the image to the Matrix Instruments Color Graphic Camera.