Table 2 Percent of samples correct classified based on PCA-DA analysis
Code group* | Percent of correct classification (%) | ||||
|---|---|---|---|---|---|
Original spectra | 1st-order derivative | 2nd-order derivative | 3rd-order derivative | 4th-order derivative | |
1 | 100.0 | 100.00 | 100.00 | 100.00 | 100.00 |
2 | 80.00 | 60.00 | 60.00 | 80.00 | 100.00 |
3 | 100.00 | 100.00 | 100.00 | 100.00 | 100.00 |
4 | 75.00 | 100.00 | 100.00 | 100.00 | 100.00 |
5 | 100.00 | 100.00 | 100.00 | 100.00 | 100.00 |
6 | 100.00 | 100.00 | 100.00 | 100.00 | 100.00 |
7 | 83.33 | 83.33 | 100.00 | 100.00 | 100.00 |
8 | 100.00 | 100.00 | 100.00 | 100.00 | 100.00 |
9 | 100.00 | 100.00 | 100.00 | 100.00 | 100.00 |
10 | 100.00 | 100.00 | 100.00 | 100.00 | 100.00 |
11 | 100.00 | 100.00 | 100.00 | 100.00 | 100.00 |
12 | 100.00 | 100.00 | 100.00 | 100.00 | 100.00 |
Total | 94.34 | 94.34 | 96.23 | 98.11 | 100.00 |