histbreaks: Histogram Breakpoints

In exams.forge: Support for Compiling Examination Tasks using the 'exams' Package

Histogram Breakpoints

Description

Randomly selects size breakpoints from breaks. If outer is TRUE, then the first and last element of breaks is always included into the returned break points. If size is a vector, the number of breakpoints is first sampled from size.

Usage

histbreaks(breaks, size, outer = TRUE, ...)

rand_breaks(breaks, size, outer = TRUE, ...)

dhistbreaks(breaks, size, outer = TRUE, ...)

Arguments

breaks	numeric: a vector of possible break points
size	integer: number of break points
outer	logical: should be the first and last element of the included breaks (default: TRUE)
...	further parameters given if sampling of size is necessary, see base::sample

Value

A vector of breakpoints.

Examples

# Always includes 100 and 200
histbreaks(seq(100, 200, by=10), 4)
# Always includes 100 and 200 and chooses randomly between 3 to 5 break points  
histbreaks(seq(100, 200, by=10), 3:5)           
# May not include 100 and 200
histbreaks(seq(100, 200, by=10), 4, outer=FALSE) 

exams.forge documentation built on Aug. 21, 2025, 5:41 p.m.