indicator: indicator function of an interval in the real line

In mathphysmx/percolation: Continuum percolation of Poisson sticks

Description

indicator function of an interval in the real line

Usage

indicator(x, min = -Inf, max = Inf, liq = ">=", riq = "<=")

Arguments

x	numeric vector of values to be tested.
min	numeric, scalar lower bound. -Inf is a valid value.
max	numeric, scalar upper bound. Inf is a valid value.
liq	character. Left inequality. ">" or ">=".
riq	characher. Right inequality. "<" or "<=".

Value

a logical vector with TRUE when x[i] is in the interval given by the parameters of this function. Logical values were used for memory efficiency when large scale usage of this function.

Author(s)

Francisco Mendoza-Torres ([e-mail])

Examples

xe <- c(-Inf, -3, 2, 6, Inf)
1 * indicator(x = xe, min = 2, max = 6, liq = ">=", riq = "<=")
    indicator(x = xe, min = 2, max = 6, liq = ">=", riq = "<=")
indicator(x = xe, min = 2, max = 6, liq = ">" , riq = "<=")
indicator(x = xe, min = 2, max = Inf, liq = ">=", riq = "<")
indicator(x = xe, min = 2, max = Inf, liq = ">=", riq = "<=")

# Also works in the case that x is unique and min and max are vectors
xl <- c(-1, 0.3, -4)
xu <- c( 1,   1, -2)
indicator(0, xl, xu)

mathphysmx/percolation documentation built on Aug. 14, 2019, 2:03 a.m.