countpeaks: Count peaks in a data sequence

In skedastic: Handling Heteroskedasticity in the Linear Regression Model

Count peaks in a data sequence

Description

This function computes the number of peaks in a double vector, with peak defined as per \insertCiteGoldfeld65;textualskedastic. The function is used in the Goldfeld-Quandt nonparametric test for heteroskedasticity in a linear model. NA and NaN values in the sequence are ignored.

Usage

countpeaks(x)

Arguments

x	A double vector.

Value

An integer value between 0 and length(x) - 1 representing the number of peaks in the sequence.

References

\insertAllCited

See Also

goldfeld_quandt

Examples

set.seed(9586)
countpeaks(stats::rnorm(20))
mtcars_lm <- lm(mpg ~ wt + qsec + am, data = mtcars)
countpeaks(mtcars_lm$residuals)

skedastic documentation built on Nov. 10, 2022, 5:43 p.m.