Does anyone know of an R code to calculate Palmer Drought Severity Index (PDSI)? [closed]

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Palmer drought severity index is one of the most popular moisture/drought indices around. There is a package in R called a SPEI that allows calculation of two other popular drought indices (Standardised precipitation index and Standardised precipitation and evapotranspiration Index ). I think there should be some package to calculate other moisture indices and particularly PDSI but i have been unable to find one myself.

Answer 1

It looks like we can thank Christian Zang for finally solving the problem: https://github.com/cszang/pdsi

Edit from 2018: This answer was just accepted so I have decided to fork the above-linked repo to my github to guard against future link rot. It will stay there indefinitely.

Answer 2

This is the link for .exe file / C++ code that achieves the same.

It contains a manual that describes the input/ output file formats.

I hope that someones skilled enough can write a wrapper for this

http://greenleaf.unl.edu/downloads/

Answer 3

A tool has been created for MatLab:

Jacobi, J., D. Perrone, L. L. Duncan, and G. Hornberger (2013), A tool for calculating the Palmer drought indices, Water Resour. Res., 49, doi:10.1002/wrcr.20342.

Answer 4

Now library scPDSI is available in R for calculation of Palmer Drought Severity Index.