Box Plot Statistics
Usage
boxplot.stats(x, coef = 1.5, do.conf=TRUE, do.out=TRUE)
Arguments
x
|
a numeric vector for which the boxplot will
be constructed (NA s and NaN s are allowed
and omitted).
|
coef
|
this determines how far the plot ``whiskers'' extend out
from the box. If coef is positive, the whiskers extend to the
most extreme data point which is no more than coef times the
interquartile coef from the box. A value of zero causes the whiskers
to extend to the data extremes.
|
do.conf,do.out
|
logicals; if FALSE , the conf or
out component respectively will be empty in the result.
|
Description
This function is typically is called by boxplot
to
gather the statistics necessary for producing box plots,
but may be invoked separately.Value
List with named components as follows:
stats
|
a vector of length 5, containing the extreme of the
lower whisker, the lower ``hinge'', the median, the upper ``hinge''
and the extreme of the upper whisker.
|
n
|
the number of of non-NA observations in the sample.
|
conf
|
the lower and upper extremes of the ``notch''.
|
out
|
the values of any data points which lie beyond the
extremes of the whiskers.
|
Note that $stats
and $conf
are sorted increasingly,
contrary to S, and that $n
and $out
include any
+- Inf
values.
See Also
fivenum
, boxplot
, bxp
.Examples
x <- c(1:100, 1000)
str(boxplot.stats(x))
str(boxplot.stats(x, do.conf=FALSE,do.out=FALSE))
str(boxplot.stats(x, coef = 3, do.conf=FALSE))
str(boxplot.stats(x, coef = 0))
str(boxplot.stats(c(x,NA)))
str(boxplot.stats(c(x,-1:1/0)))