npphen: An R-Package for Detecting and Mapping Extreme Vegetation Anomalies Based on Remotely Sensed Phenological Variability. - Roberto O. Chávez; Sergio A. Estay; José A. Lastra; Carlos G. Riquelme; Matías Olea; Javiera Aguayo; Mathieu Decuyper (Remote. Sens., 2023)