Define a pretty sequence given data, limits and pretty parameters

Source: R/pretty_axis_support.R

This function defines a pretty sequence given data, limits and parameters.

pretty_seq(x, lim = NULL, pretty_args = list(n = 5))

Arguments

x

An object representing some data to be plotted (e.g., x values).
lim

(optional) A vector of length two which define the limits within which the sequence should lie.
pretty_args

A named list of arguments passed to pretty_x().

Value

A list comprising 'at', a pretty sequence; and 'lim', limits, which may have been adjusted.

Author

Edward Lavender

Examples

pretty_seq(0:10)

#> $at
#> [1]  0  2  4  6  8 10
#> 
#> $lim
#> [1]  0 10
#> attr(,"user")
#> [1] FALSE FALSE
#> 
pretty_seq(0:10, lim = c(0, 9))

#> $at
#> [1] 0 2 4 6 8
#> 
#> $lim
#> [1] 0 9
#> attr(,"user")
#> [1] TRUE TRUE
#> 
pretty_seq(seq.Date(as.Date("2016-01-01"), as.Date("2016-01-12"), 1))

#> $at
#> [1] "2016-01-01" "2016-01-03" "2016-01-05" "2016-01-07" "2016-01-09"
#> [6] "2016-01-11" "2016-01-13"
#> 
#> $lim
#> [1] "2016-01-01" "2016-01-13"
#> 
pretty_seq(seq.Date(as.Date("2016-01-01"), as.Date("2016-01-12"), 1), pretty_args = list(n = 3))

#> $at
#> [1] "2016-01-01" "2016-01-06" "2016-01-11" "2016-01-16"
#> 
#> $lim
#> [1] "2016-01-01" "2016-01-16"
#>