The resolution is the smallest non-zero distance between adjacent
values. If there is only one unique value, then the resolution is defined
to be one. If x is an integer vector, then it is assumed to represent a
discrete variable, and the resolution is 1.

resolution(x, zero = TRUE)

## Arguments

- x
numeric vector

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

## Examples

resolution(1:10)

#> [1] 1

resolution((1:10) - 0.5)

#> [1] 0.5

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

#> [1] 1

# Note the difference between numeric and integer vectors
resolution(c(2, 10, 20, 50))

#> [1] 2

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

#> [1] 1