isCross: Find Zero Crossing Points

In MangoTheCat/visualTest: Perform Fuzzy Image Matching

Description

Find positions in a numeric vector where sign has changed on average for more than n elements.

Usage

isCross(x, len = 3)

Arguments

x	numeric vector
len	natural number window length for sign comparison

Value

logical vector of length zero

Examples

x1 <- -7:8
visualTest:::isCross(x = x1)
x2 <- rep(-1:1, times = 6)
visualTest:::isCross(x = x2)

MangoTheCat/visualTest documentation built on May 7, 2019, 2:24 p.m.