pretty.Date
Pretty Breakpoints for DateTime Classes
Compute a sequence of about n+1
equally spaced ‘nice’
values which cover the range of the values in x
.
 Keywords
 dplot
Usage
"pretty"(x, n = 5, min.n = n %/% 2, sep = " ", ...)
"pretty"(x, n = 5, min.n = n %/% 2, sep = " ", ...)
Arguments
 x
 an object of class
"Date"
or"POSIXt"
(i.e.,"POSIXct"
or"POSIXlt"
).  n
 integer giving the desired number of intervals.
 min.n
 nonnegative integer giving the minimal number of intervals.
 sep
 character string, serving as a separator for certain formats (e.g., between month and year).
 ...
 further arguments for compatibility with the generic, ignored.
Value

A vector (of the suitable class) of locations, with attribute
"labels"
giving corresponding formatted character labels.
See Also
pretty
for the default method.
Examples
library(grDevices)
steps <
list("10 secs", "1 min", "5 mins", "30 mins", "6 hours", "12 hours",
"1 DSTday", "2 weeks", "1 month", "6 months", "1 year",
"10 years", "50 years", "1000 years")
names(steps) < paste("span =", unlist(steps))
x < as.POSIXct("20020202 02:02")
lapply(steps,
function(s) {
at < pretty(seq(x, by = s, length = 2), n = 5)
attr(at, "labels")
})
Community examples
Looks like there are no examples yet.