Find Interval Numbers or Indices and Return Custom Number For 0.

A simple wrapper of findInterval() function that invokes findInterval(), takes its output and replaces all the elements with \(0\) value to a custom number as specified in replacement argument.

Usage

h_find_interval(..., replacement = -Inf)

Arguments

...

Arguments passed on to base::findInterval

x

numeric.

vec

numeric, sorted (weakly) increasingly, of length N, say.

rightmost.closed

logical; if true, the rightmost interval, vec[N-1] .. vec[N] is treated as closed, see below.

all.inside

logical; if true, the returned indices are coerced into 1,...,N-1, i.e., 0 is mapped to 1 and N to N-1.

left.open

logical; if true all the intervals are open at left and closed at right; in the formulas below, \(\le\) should be swapped with \(<\) (and \(>\) with \(\ge\)), and rightmost.closed means ‘leftmost is closed’. This may be useful, e.g., in survival analysis computations.

checkSorted

logical indicating if vec should be checked, i.e., is.unsorted(vec) is asserted to be false. Setting this to FALSE skips the check gaining speed, but may return nonsense results in case vec is not sorted.

checkNA

logical indicating if each x[i] should be checked as with is.na(.). Setting this to FALSE in case of NA's in x[] may result in platform dependent nonsense.

replacement

(number)
a custom number to be used as a replacement for \(0\). Default to -Inf.

Examples

h_find_interval(1, c(2, 4, 6))
#> [1] -Inf
h_find_interval(3, c(2, 4, 6))
#> [1] 1
h_find_interval(1, c(2, 4, 6), replacement = -1)
#> [1] -1