hydroCHISQR

R package to apply a Chi – Squared test for hydrological frequency analysis

Requirements

Dependencies:
grDevices, ggplot2, reshape2, stats, ggpubr, FAmle, FAdist

Recomendations:
actuar package

You can install the development version of hydroCHISQR from GitHub with this R command:

# install.packages("remotes")
remotes::install_github("Alobondo/hydroCHISQR")
library(hydroCHISQR)

Functions	Description
`hydroCHISQR(df, list_fit, nc, dist_param, alpha, c_test, c_method)`	Apply the Chi – Squared test for hydrological frequency analysis.
`df`	Data frame with observations and distributions adjusted.
`list_fit`	List with distributions and parameters fitted (only used with method 2).
`nc`	Number of classes, default 1 for Sturges, 2 for Scott, 3 for Freedman-Diaconis.
`dist_param`	Number of parameters of the distributions in df.
`alpha`	Significance level, typical 0.05.
`c_test`	Statistical result or plot, default 1 for statistical and 2 for plot.
`c_method`	Chi – Squared test method: 1 (Varas & Bois, 1998) and 2 (Chow, 1949).

hydroCHISQR::example_2_params Example of frequency analysis result for 2 parameters distributions, with first column as observations.

hydroCHISQR::example_3_params Example of frequency analysis result for 3 parameters distributions, with first column as observations.

hydroCHISQR::fit_2_params Example of 2 parameters distributions fitted.

hydroCHISQR::fit_3_params Example of 3 parameters distributions fitted.

If you find an error in some function, want to report a typo in the documentation or submit a recommendation, you can do it here

Hydrology, R package, Frequency analysis