Table 3.
Error matrix to assess the accuracy of the final land cover dataset. Reference data were polygons of a single land cover identified from 10 randomized points per tile; land cover was identified from historical Google Earth imagery. The overall accuracy was 83.00% (95% Confidence Interval (CI): 61.25%–90.29%).
| Land cover classification | Independent samples | Row total | User’s accuracy (%) | User’s accuracy 95% CI (lower limit, upper limit) | ||||
|---|---|---|---|---|---|---|---|---|
| Tree cover | Bare ground | Built environment | Cropland | Water | ||||
| Tree cover | 27220 | 17 | 56 | 2625 | 256 | 30174 | 90.21 | 89.87, 90.55 |
| Bare ground | 1357 | 12252 | 156 | 4716 | 4995 | 23476 | 52.19 | 51.55, 52.83 |
| Built environment | 1 | 208 | 2623 | 2655 | 7870 | 13357 | 19.64 | 18.96, 20.31 |
| Cropland | 1111 | 827 | 569 | 39984 | 9274 | 51765 | 77.24 | 76.88, 77.60 |
| Water | 1059 | 2 | 7 | 47 | 102446 | 103561 | 98.92 | 98.86, 98.99 |
| Column total | 30748 | 13306 | 3411 | 50027 | 124841 | 222333 | ||
| Producer’s accuracy (%) | 88.53 | 92.08 | 76.90 | 79.92 | 82.06 | |||
| Producer’s accuracy 95% CI (lower limit, upper limit) | 88.17, 88.88 | 91.62, 92.54 | 75.48, 78.31 | 79.57, 80.28 | 81.85, 82.27 | |||