simplenumber {spatstat.utils}

Simple Rational Number

Description

Given a numeric value, try to express it as a simple rational number.

Usage

simplenumber(x, unit = "", multiply = "*", tol = .Machine$double.eps)

Arguments

x

A single numeric value.

unit

Optional. Character string giving the name of the unit in which x is expressed. Typically an irrational number such as pi. See Examples.

multiply

Optional. Character string representing multiplication.

tol

Numerical tolerance.

Details

The code tries to express x as an integer x=n, or as the reciprocal of an integer x=1/n, or as a simple rational number x = m/n, where m,n are small integers.

Value

A character string representing the simple number, or NULL if not successful.

Author(s)

Adrian Baddeley [e-mail].

Examples

  simplenumber(0.3)
  simplenumber(0.333333333333333333333333)
  x <- pi * 2/3
  simplenumber(x/pi, "pi")