Contingency/error matrix
Sampling results are presented in a contingency or error matrix with the following standard format:
- Reference data = columns
- Image classes = rows
| Forest | Grass land | Bare ground | Urban | Water | Row Total | |
|---|---|---|---|---|---|---|
| Forest | 70 | 5 | 0 | 13 | 0 | 88 |
| Grass land | 3 | 55 | 0 | 0 | 0 | 58 |
| Bare ground | 0 | 0 | 99 | 0 | 0 | 99 |
| Urban | 0 | 0 | 4 | 37 | 0 | 41 |
| Water | 0 | 0 | 0 | 0 | 121 | 121 |
| Col Total | 73 | 60 | 103 | 50 | 121 | 407 |
Calculations of error statistics are derived from contents of the error or contingency matrix at mapping category and map level.
