GenLogistic: Generalized Logistic distribution function.

Description Usage Arguments Details Value Author(s) References

Description

Cumulative distribution function of the Generalized Logistic probability distribution function, and maximum likelihood fitting function.

Usage

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pglo(x, para)

parglo.maxlik(x, ini)

Arguments

x

vector of quantiles for which to evaluate the PDF.

para

a list of parameters of a generalized Logistic distribution function, as yield by function parglo.

ini

a vector of initial values of the parameters to be fit.

Details

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

Value

A vector of cumulative probabilities corresponding to the quantiles in x.

Author(s)

Santiago Beguer<c3><ad>a

References

S.M. Vicente-Serrano, S. Beguer<c3><ad>a, J.I. L<c3><b3>pez-Moreno. 2010. A Multi-scalar drought index sensitive to global warming: The Standardized Precipitation Evapotranspiration Index <e2><80><93> SPEI. Journal of Climate 23: 1696, DOI: 10.1175/2009JCLI2909.1.


SPEI documentation built on May 2, 2019, 11:05 a.m.