Quantile of Pearson Type III distribution
calc_qpearsonIII(p, mean = 0, sd = 1, skew = 0)Quantiles for the described distribution
Vector of non-exceedance probabilities, between 0 and 1, to calculate quantiles.
Vector of means of the distribution of the data.
Vector of standard deviation of the distribution of the data.
Vector of skewness of the distribution of the data.
calc_qpearsonIII and calc_qlpearsonIII are functions to fit a log-Pearson type III
distribution from a given mean, standard deviation, and skew. This source code is replicated,
unchanged, from the swmrBase package in order to reduce the dependency on that package.
Asquith, W.H., Kiang, J.E., and Cohn, T.A., 2017, Application of at-site peak-streamflow frequency analyses for very low annual exceedance probabilities: U.S. Geological Survey Scientific Investigation Report 2017–5038, 93 p. [Also available at https://doi.org/10.3133/sir20175038.]
Lorenz, D.L., 2015, smwrBase—An R package for managing hydrologic data, version 1.1.1: U.S.
Geological Survey Open-File Report 2015–1202, 7 p.
[Also available at https://doi.org/10.3133/ofr20151202.]