spreadout: Spread out a vector of numbers to a minimum interval

In plotrix: Various Plotting Functions

Spread out a vector of numbers to a minimum interval

Description

Spread out a vector of numbers so that there is a minimum interval between any two numbers when in ascending or descending order.

Usage

 spreadout(x,mindist)

Arguments

x	A numeric vector which may contain NAs.
mindist	The minimum interval between any two values when in ascending or descending order.

Details

‘⁠spreadout⁠’ starts at or near the middle of the vector and increases the intervals between the ordered values. NAs are preserved. ‘⁠spreadout⁠’ first tries to spread groups of values with intervals less than ‘⁠mindist⁠’ out neatly away from the mean of the group. If this doesn't entirely succeed, a second pass that forces values away from the middle is performed.

‘⁠spreadout⁠’ is currently used to avoid overplotting of axis tick labels where they may be close together.

Value

On success, the spread out values. If there are less than two valid values, the original vector is returned.

Author(s)

Jim Lemon

Examples

 spreadout(c(1,3,3,3,3,5),0.2)
 spreadout(c(1,2.5,2.5,3.5,3.5,5),0.2)
 spreadout(c(5,2.5,2.5,NA,3.5,1,3.5,NA),0.2)
 # this will almost always invoke the brute force second pass
 spreadout(rnorm(10),0.5)

plotrix documentation built on Nov. 10, 2023, 5:07 p.m.