is.constant function

Simple Check for Constant Time Series

is.constant is a utility function that checks whether a time series is constant.

is.constant(x)

Arguments

• x: vector or matrix with time series data (one time series per column)

Returns

A vector with a boolean statement (TRUE or FALSE) for each time series.

Author(s)

Korbinian Strimmer (https://strimmerlab.github.io/).

Examples

# load GeneCycle library
library("GeneCycle")

# load data set
data(caulobacter)

# any constant genes?
sum(is.constant(caulobacter))

# but here:
series.1 <- rep(1, 10)
series.2 <- seq(1, 10)
is.constant( cbind(series.1, series.2) )