91 100 STEP VARIABLE LANDSAT F VALUE
44 100 NUMBER ENTERED BAND MONTH TO ENTER
44 95 1 3 6 MAY 159.9462
29 74 2 15 6 AUG 86.4440
43 87 3 14 5 AUG 57.4195
4 95 4 5 4. JUN 41.2215
ul T 5 7 6 JUN 37.5246
6 19 6 SEP 36.4801
15 20 7 2 5 MY 31.4473
10 95 8 9 4. JUL 19.1810
51 90 9 11 6 JUL 19.6123
50 83 10 18 5 SEP 12.9724
75 100 11 6 5 JUN 12.0967
12 4 7 MAY 7 1311
59 100 13 13 à AUG 6.9163
8 82 14 8 7 JUN 5.5010
50 75 15 10 5 JUL 5.1027
25 75 16 17 4 SEP 4.8474
90 100 17 1 4 MAY 4.5549
18 16 7 AUG 4.5532
of training 19 20 7 SEP 2.9718
; ; 20 12 7 JUL 2.2619
analysis
2 : : Table 2: Summary of stepwise linear discriminant analysis
)
00
VOL
D
eb
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VI. .Comparison.of classification results
with ground truth data
The comparison "classification results" with "ground truth" is displayed in
Fig. 4: here, a capital letter represents perfect coincidence between both.
White pixels represent areas where no ground truth was available. Minus-signs
signify pixels for which ground truth and classification do not coincide.
They appear mainly at the borders of two neighbouring fields due to the
pixels beingspectrally mixed or due to misregistration in the overlaying of
the channels or due to misdigitization of the ground truth information.
A certain number of minus-signs arises from the letter reason: our process for
digitization of the ground truth data and their superposition on the
classification results has to be revised. The precision we have worked with
is not yet adequate for the data we have. Therefore the example given here
merely serves to demonstrate the method of pixel-wise comparison.
round truth Apart from that we see some misclassified fields telling us that our trai-
mn 2) ning sample set used for the discriminant analysis was not representative
Minus-signs for those cases.