You will work with real NDVI data derived from satellite imagery at a 30 m resolution. The dataset covers three tiles (each approximately 120 km × 120 km): one central tile, along with one adjacent tile to the east and one to the west. For each tile, cloud-free observations are available over a 10-year period, with a temporal resolution of 16 days. In addition, 10,000 time series have been sampled from pixels within the central tile. To these time series, we have artificially introduced an additional 25% of missing values.

$$\textrm{NDVI}=\frac{\mathrm{NIR} - \mathrm{Red}}{\mathrm{NIR} + \mathrm{Red}}\ $$