lbl_intervals | R Documentation |
These labels are the most exact, since they show you whether intervals are "closed" or "open", i.e. whether they include their endpoints.
lbl_intervals(
fmt = NULL,
single = "{{{l}}}",
first = NULL,
last = NULL,
raw = FALSE
)
fmt |
String, list or function. A format for break endpoints. |
single |
Glue string: label for singleton intervals. See |
first |
Glue string: override label for the first category. Write e.g.
|
last |
String: override label for the last category. Write e.g.
|
raw |
Mathematical set notation looks like this:
[a, b]
: all numbers x
where a <= x <= b
;
(a, b)
: all numbers where a < x < b
;
[a, b)
: all numbers where a <= x < b
;
(a, b]
: all numbers where a < x <= b
;
{a}
: just the number a
exactly.
A function that creates a vector of labels.
If fmt
is not NULL
then it is used to format the endpoints.
If fmt
is a string, then numeric endpoints will be formatted by
sprintf(fmt, breaks)
; other endpoints, e.g. Date objects, will be
formatted by format(breaks, fmt)
.
If fmt
is a list, then it will be used as arguments to format.
If fmt
is a function, it should take a vector of numbers (or other objects
that can be used as breaks) and return a character vector. It may be helpful
to use functions from the {scales}
package, e.g. scales::label_comma()
.
Other labelling functions:
lbl_dash()
,
lbl_discrete()
,
lbl_endpoints()
,
lbl_glue()
,
lbl_manual()
,
lbl_midpoints()
,
lbl_seq()
tab(-10:10, c(-3, 0, 0, 3),
labels = lbl_intervals())
tab(-10:10, c(-3, 0, 0, 3),
labels = lbl_intervals(fmt = list(nsmall = 1)))
tab_evenly(runif(20), 10,
labels = lbl_intervals(fmt = percent))
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