Estimation and Plotting of IDF Curves
d-GEV probability density function
Diagnostic Plots for d-gev Models
Maximum-likelihood Fitting of the duration-dependent GEV Distribution
get initial values for gev.d.fit
d-GEV Likelihood
Calculate gev(d) parameters from gev.d.fit output
Introduction
Aggregation and annual maxima for chosen durations
Plotting of IDF curves at a chosen station
d-GEV cumulative distribution function
d-GEV quantile function
Generation of random variables from d-GEV
Intensity-duration-frequency (IDF) curves are a widely used analysis-tool in hydrology to assess extreme values of precipitation [e.g. Mailhot et al., 2007, <doi:10.1016/j.jhydrol.2007.09.019>]. The package 'IDF' provides functions to estimate IDF parameters for given precipitation time series on the basis of a duration-dependent generalized extreme value distribution [Koutsoyiannis et al., 1998, <doi:10.1016/S0022-1694(98)00097-3>].