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TTAinterfaceTrendAnalysis (version 1.5.9)

seaKen: Seasonal and Regional Kendall trend test (code modified from the former wq package)

Description

Calculates the Seasonal or Regional Kendall test of trend significance, including an estimate of the Sen slope.

Usage

seaKen(x, ...)

Value

A list of the following if x is a vector: seaKen returns a list with the following members:

sen.slope

Sen slope

sen.slope.pct

Sen slope as percent of mean

p.value

significance of slope

miss

for each season, the fraction missing of slopes connecting first and last 20 percent of the years or a matrix with corresponding columns if x is a matrix or data frame.

Arguments

x

A numeric vector, matrix or data frame made up of seasonal time series

...

Other arguments to pass to plotting function

Author

Alan D. Jassby and James E. Cloern

See Also

mannKen