gwl_zyp_test: Perform Mann-Kendall trend test on many wells

In bcgov/bcgroundwater: Analyse B.C. Groundwater Level Data

Perform Mann-Kendall trend test on many wells

Description

Uses the zyp package to calculate Mann-Kendall trend test on pre-whitened data (to remove autocorrelation) for many wells, using one or both of two pre-whitening methods, see zyp documentation.

Usage

gwl_zyp_test(dataframe, wells = NULL, byID = "Well_Num",
  col = "mean_GWL", method = "both")

Arguments

dataframe	Dataframe containing: an ID column (specified in by) and a column of values
wells	Vector of well numbers to test. Default NULL does all in dataframe
byID	The name of the ID column
col	The name of the column with the GWL values
method	"both" (default), "yuepilon", or "zhang"

Value

A dataframe of results for all wells evaluated.

bcgov/bcgroundwater documentation built on March 18, 2024, 5:43 a.m.