Generalized-Logistic: Generalized Logistic maximum likelihood function

In SPEI: Calculation of the Standardized Precipitation-Evapotranspiration Index

Generalized Logistic maximum likelihood function

Description

Maximum likelihood fitting function for generalized logistic distribution.

Usage

parglo.maxlik(x, ini)

Arguments

x	vector of quantiles for which to evaluate the PDF.
ini	a vector of initial values of the parameters to be fit.

Details

This function is used internally by spei and spi and is supposed to never be needed by the regular user. Initial values for maximum likelihood estimation can be provided by parglo.

Value

a list of parameters of a generalized Logistic distribution function

Author(s)

Santiago Beguería

References

S.M. Vicente-Serrano, S. Beguería, J.I. López-Moreno. 2010. A Multi-scalar drought index sensitive to global warming: The Standardized Precipitation Evapotranspiration Index – SPEI. Journal of Climate 23: 1696, DOI: 10.1175/2009JCLI2909.1.

SPEI documentation built on March 7, 2023, 5:15 p.m.