Maximum likelihood fitting function for generalized logistic distribution.
parglo.maxlik(x, ini)
a list of parameters of a generalized Logistic distribution function
vector of quantiles for which to evaluate the PDF.
a vector of initial values of the parameters to be fit.
Santiago Beguería
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
.
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.