This repo contains example Matlab and Python code that shows users how to calculate the Hybrid Precipitation Index described in Chelton and Risien, 2020.
Chelton, D. B., and C. M. Risien, 2020: A hybrid precipitation index inspired by the SPI, PDSI and MCDI. Part 1: Development of the index. J. Hydrometeorol., DOI: 10.1175/JHM-D-19-0230.1.
Chelton, D. B., and C. M. Risien, 2020: A hybrid precipitation index inspired by the SPI, PDSI and MCDI. Part 2: Application to investigate precipitation variability along the west coast of North America. J. Hydrometeorol., DOI: 10.1175/JHM-D-19-0231.1.