## Usage

resolution(x, zero = TRUE)

## Arguments

- x
- numeric vector
- zero
- should a zero value be automatically included in the
computation of resolution

## Description

The resolution is is the smallest non-zero distance between adjacent
values. If there is only one unique value, then the resolution is defined
to be one.

## Details

If x is an integer vector, then it is assumed to represent a discrete
variable, and the resolution is 1.

## Examples

resolution(1:10)

[1] 1

resolution((1:10) - 0.5)

[1] 0.5

resolution((1:10) - 0.5, FALSE)

[1] 1

resolution(c(1,2, 10, 20, 50))

[1] 1

resolution(as.integer(c(1, 10, 20, 50))) # Returns 1

[1] 1