monotonicity: monotonicity

In decisionpatterns/monotone: Test/check/verify/investige the monotonic properties of numeric vectors

Description

Determine the monotonicity of a numeric vector as: stictly increasing, increasing / montonically increasing / non-decreasing, decreasing / monotonically decreasing / non-increasing, strictly decreasing, or constant

Usage

monotonicity(x, na.action = na.omit, zero.action = I, ...)

is.increasing(x, type = "increasing", na.action = na.omit,
  zero.action = zero.pass)

is.decreasing(x, type = "increasing", na.action = na.omit,
  zero.action = zero.pass)

Arguments

x	numeric vector
na.action	function to handle NA values (default:na.omit)
...	additional arguments passed to na.action monotonicty determines the monotonicy of a numeric vector. Instead of using diff, this function uses cummax and cummin functions for efficiency. See the stackoverflow reference for timings and an explanation.

Value

integer; 2

decisionpatterns/monotone documentation built on May 15, 2019, 1:56 a.m.