Table 5 Accuracy assessment of winter wheat spatial distribution in Yancheng, Jiangsu.
Number of prior samples | Numbers of samples classified as winter wheat | Kappa coefficient | Overall accuracy (%) | |
|---|---|---|---|---|
Tinghu | 2306 | 2077 | 0.8909 | 90.07 |
Yandu | 2717 | 2554 | 0.9364 | 94.00 |
Dafeng | 6142 | 5538 | 0.8921 | 90.17 |
Xiangshui | 7184 | 7049 | 0.9809 | 98.12 |
Binhai | 8236 | 7371 | 0.8841 | 89.50 |
Funing | 10,242 | 9852 | 0.9605 | 96.19 |
Sheyang | 15,971 | 14,668 | 0.9118 | 91.84 |
Jianhu | 6055 | 5681 | 0.9344 | 93.82 |
Dongtai | 4745 | 4554 | 0.9581 | 95.97 |
Kaifaqu | 770 | 686 | 0.8792 | 89.09 |
Total | 64,368 | 60,030 | 0.9228 | 93.26 |
