Table 4.
Display of the time points yielding the lowest RMSE for yield prediction for all reflectance bands, vegetation indices and texture features.
| Raster | Mean RMSE | Min RMSE | PS | VI | Mean RMSE | Min RMSE | PS | TF | Mean RMSE | Min RMSE | PS | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Single time points | ||||||||||||||||||||
| 2021 | 2022 | 2021 | 2022 | 2021 | 2022 | 2021 | 2022 | 2021 | 2022 | 2021 | 2022 | 2021 | 2022 | 2021 | 2022 | 2021 | 2022 | |||
| BLUE | 76.8 | 95.2 | 58.7 | 80.4 | BO | SE | DVI | 70.6 | 86.7 | 61.6 | 64.4 | SE | GF | CON | 79.5 | 94.1 | 59.7 | 68.7 | SE | HE |
| GREEN | 71.3 | 88.5 | 53.0 | 68.0 | FL | HE | RVI | 64.7 | 85.6 | 52.3 | 60.6 | EF | GF | COR | 77.6 | 92.1 | 62.2 | 67.7 | FL | TI |
| RED | 65.1 | 87.5 | 52.4 | 66.5 | FL | HE | NDRE | 61.8 | 83.5 | 49.1 | 61.5 | BO | BO | DIS | 78.4 | 94.5 | 57.7 | 66.3 | FL | HE |
| REDEDGE | 77.6 | 87.6 | 56.0 | 64.4 | LF | SE | MCARI | 72.4 | 93.5 | 61.7 | 67.2 | BO | GF | ENE | 76.4 | 94.6 | 55.5 | 71.2 | SE | GF |
| NIR | 71.9 | 87.1 | 64.8 | 68.7 | SE | GF | CCII | 67.9 | 86.7 | 57.0 | 66.3 | SE | GF | HOM | 77.0 | 93.7 | 59.4 | 68.7 | FL | FL |
| Mean | 72.5 | 89.2 | 57.0 | 69.6 | 67.5 | 87.2 | 56.3 | 64.0 | 77.8 | 93.8 | 58.9 | 68.5 | ||||||||
| Smoothed time points | ||||||||||||||||||||
| 2021 | 2022 | 2021 | 2022 | 2021 | 2022 | 2021 | 2022 | 2021 | 2022 | 2021 | 2022 | 2021 | 2022 | 2021 | 2022 | 2021 | 2022 | |||
| BLUE | 76.6 | 96.3 | 67.1 | 86.4 | SE | GF | DVI | 69.3 | 84.7 | 63.7 | 65.9 | EF | GF | CON | 77.4 | 95.8 | 68.2 | 79.0 | SE | BO |
| GREEN | 70.7 | 92.0 | 56.4 | 82.0 | FL | GF | RVI | 65.4 | 82.0 | 52.3 | 68.0 | FL | GF | COR | 75.6 | 87.6 | 68.5 | 74.1 | FL | GF |
| RED | 64.9 | 90.9 | 50.2 | 75.1 | FL | FL | NDRE | 60.1 | 82.0 | 49.6 | 64.3 | EF | GF | DIS | 74.5 | 91.6 | 61.3 | 72.7 | SE | BO |
| REDEDGE | 78.1 | 93.9 | 65.8 | 83.8 | SE | GF | MCARI | 70.8 | 91.9 | 60.2 | 70.7 | FL | GF | ENE | 76.4 | 91.6 | 63.5 | 74.9 | FL | GF |
| NIR | 69.9 | 90.8 | 62.9 | 72.7 | EF | GF | CCII | 68.0 | 84.0 | 56.0 | 61.4 | EF | GF | HOM | 76.1 | 90.7 | 62.6 | 74.4 | TI | BO |
| Mean | 72.0 | 92.8 | 60.5 | 80.0 | 66.7 | 84.9 | 56.4 | 66.1 | 76.0 | 91.5 | 64.8 | 75.0 | ||||||||
| Moving time window | ||||||||||||||||||||
| 2021 | 2022 | 2021 | 2022 | 2021 | 2022 | 2021 | 2022 | 2021 | 2022 | 2021 | 2022 | 2021 | 2022 | 2021 | 2022 | 2021 | 2022 | |||
| BLUE | 65.1 | 83.0 | 52.7 | 76.5 | BO | GF | DVI | 62.8 | 76.6 | 58.1 | 62.7 | EF | GF | CON | 66.4 | 82.4 | 58.8 | 62.8 | SE | FL |
| GREEN | 60.4 | 72.0 | 53.9 | 56.1 | SE | GF | RVI | 57.2 | 74.6 | 48.1 | 58.7 | FL | GF | COR | 66.4 | 80.6 | 60.8 | 62.4 | SE | GF |
| RED | 55.3 | 72.1 | 45.0 | 61.4 | FL | GF | NDRE | 54.0 | 71.5 | 45.8 | 58.9 | BO | GF | DIS | 66.1 | 82.6 | 57.4 | 63.3 | BO | FL |
| REDEDGE | 66.1 | 74.5 | 57.5 | 61.1 | SE | GF | MCARI | 62.8 | 84.1 | 54.9 | 65.4 | FL | GF | ENE | 65.9 | 82.9 | 58.6 | 63.1 | SE | GF |
| NIR | 62.3 | 76.8 | 56.7 | 66.2 | SE | GF | CCII | 59.4 | 72.7 | 53.8 | 50.8 | BO | GF | HOM | 65.4 | 81.3 | 57.6 | 56.9 | BO | FL |
| Mean | 61.8 | 75.7 | 53.2 | 64.3 | 59.2 | 75.9 | 52.1 | 59.3 | 66.0 | 82.0 | 58.6 | 61.7 | ||||||||
Mean RMSE are all RMSE values averaged over the whole season. Min RMSE values show the lowest RMSE of a season. The phenology stages (PS) are reported at which the min RMSE was recorded.
Bold values indicate minimal Mean and Min RMSE values for a respective feature, featue selection and year combination. Phenology stages in bold indicate the stage when the minimal RMSE value was recorded.