logic function

Extended logical operators

Extended binary operators for easy subsetting.

x %~% target

Similar(x, target, tol = Inf)

Arguments

• x, target: numeric vectors
• tol: tolerance for similarity

Returns

A logical vector of the same length of x.

Details

%~% can be thought as a "similar" operator. It's a fuzzy version of %in% in that returns TRUE for the element of x

which is the (first) closest to any element of target.

Similar is a functional version of %~% that also has a tol parameter that indicates the maximum allowed tolerance.

Examples

set.seed(198)
x <- rnorm(100)
x[x %~% c(0.3, 0.5, 1)]

# Practical use case: vertical cross-section at
# approximately 36W between 50S and 50N.
cross.lon <- -34 + 360
library(ggplot2)
library(data.table)
ggplot(temperature[lon %~% cross.lon & lat %between% c(-50, 50)],
       aes(lat, lev)) +
    geom_contour(aes(z = air))

See Also

Other utilities: Anomaly(), JumpBy(), Mag(), Percentile()