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USGS:Biology arrow icon Biological Informatics Program arrow icon Vegetation Characterization Program arrow icon Theodore Roosevelt National Park arrow icon Accuracy Assessment Matrix

Accuracy Assessment Matrix

Table 4-3.  Contingency table (error matrix) for THRO vegetation mapping accuracy assessment. Table 4-3 Contingency Table, continued.
                                                       
    Reference Data (Accuracy Assessment Class) Total
  Map 1 2 3 4 10 12 13 15 16 17 18 30 31 33 35 36 37 38 39 41 42 43 44 45 47 N Total Sample Data Comission  90% Confidence Referenc Data Omission 90% Confidence
  Code                                                     Correct Error Interval (%) Error Interval (%)
S 1 6                                                 6 r N Map Code % Correct - + N Map Code % Correct - +
a 2   43 2         1   1       1                     1 49 6 6 1 100.0% 65.5% 100.0% 6 1 100.0% 66.5% 100.0%
m 3     1                                             1 43 49 2 87.8% 77.3% 94.5% 48 2 89.6% 79.3% 95.8%
p 4       4                                           4 1 1 3 100.0% 10.0% 100.0% 5 3 20.0% 2.1% 62.1%
l 10         4                                1         5 4 4 4 100.0% 50.0% 100.0% 4 4 100.0% 50.0% 100.0%
e 12           1         1           1                 3 4 5 10 80.0% 37.9% 97.9% 9 10 44.4% 21.0% 76.8%
  13             0                                     0 1 3 12 33.3% 3.5% 80.4% 6 12 16.7% 1.7% 54.2%
D 15               2                                   2 0 0 13 n/a n/a n/a 2 13 0.0% 0.0% 68.4%
a 16           1 1   5       2                         9 2 2 15 100.0% 31.6% 100.0% 12 15 16.7% 4.5% 39.8%
t 17               1   19 2                             22 5 9 16 55.6% 23.2% 79.0% 17 16 29.4% 14.0% 50.0%
a 18   2       2   7 12   63 3 3   1 4                 1 98 19 22 17 86.4% 71.1% 94.9% 20 17 95.0% 79.7% 99.5%
  30           1           1                           2 63 98 18 64.3% 55.8% 72.8% 66 18 95.5% 88.7% 98.7%
  31         2   1           12       1 1       1       18 1 2 30 50.0% 5.1% 94.9% 5 30 20.0% 2.1% 62.1%
  33   1                       2                       3 12 18 31 66.7% 46.4% 83.7% 23 31 52.2% 32.8% 72.6%
  35   1 1                 1     11                     14 2 3 33 66.7% 19.6% 96.5% 3 33 66.7% 19.6% 96.5%
  36                               0                   0 11 14 35 78.6% 57.8% 91.9% 12 35 91.7% 70.6% 99.1%
  37         3 1             4     1 13 1               23 0 0 36 n/a n/a n/a 8 36 0.0% 0.0% 25.5%
  38                         1         3               4 13 23 37 56.5% 38.1% 72.7% 15 37 86.7% 67.4% 96.4%
  39                                     1             1 3 4 38 75.0% 32.0% 97.4% 6 38 50.0% 20.1% 79.9%
  41                                       0           0 1 1 39 100.0% 10.0% 100.0% 1 39 100.0% 10.0% 100.0%
  42                                         3     1   4 0 0 41 n/a n/a n/a 1 41 0.0% 0.0% 90.0%
  43                                       1 1 7   1   10 3 4 42 75.0% 32.0% 97.4% 6 42 50.0% 20.1% 79.9%
  44   1           1               3