subset: Subset a histogram by removing some of the buckets.

In HistogramTools: Utility Functions for R Histograms

Description

SubsetHistogram creates a histogram by zooming in on a portion of a larger histogram and discarding tail buckets.

Usage

  SubsetHistogram(x, minbreak=NULL, maxbreak=NULL)

Arguments

x	A histogram object (created by hist).
minbreak	If non-NULL, specifies a new minimum breakpoint for the returned histogram. Must be one of the existing breakpoints of x.
maxbreak	If non-NULL, specifies a new maximum breakpoint for the returned histogram. Must be one of the existing breakpoints of x.

Details

This function provides a way to "zoom-in" on a histogram by setting new minimum and maximum breakpoints and returning a histogram of only the interior part of the distribution. At least one of minbreak or maxbreak should be set, otherwise the original histogram is returned unmodified.

Author(s)

Murray Stokely [e-mail]

See Also

histogramtools-package and hist.

Examples

hist.1 <- hist(c(1,2,3), breaks=c(0,1,2,3,4,5,6,7,8,9), plot=FALSE)
hist.2 <- SubsetHistogram(hist.1, maxbreak=6)

hist.1
hist.2

Example output

$breaks
 [1] 0 1 2 3 4 5 6 7 8 9

$counts
[1] 1 1 1 0 0 0 0 0 0

$density
[1] 0.3333333 0.3333333 0.3333333 0.0000000 0.0000000 0.0000000 0.0000000
[8] 0.0000000 0.0000000

$mids
[1] 0.5 1.5 2.5 3.5 4.5 5.5 6.5 7.5 8.5

$xname
[1] "c(1, 2, 3)"

$equidist
[1] TRUE

attr(,"class")
[1] "histogram"
$breaks
[1] 0 1 2 3 4 5 6

$counts
[1] 1 1 1 0 0 0

$density
[1] 0.3333333 0.3333333 0.3333333 0.0000000 0.0000000 0.0000000

$mids
[1] 0.5 1.5 2.5 3.5 4.5 5.5

$xname
[1] "c(1, 2, 3)"

$equidist
[1] TRUE

attr(,"class")
[1] "histogram"

HistogramTools documentation built on May 2, 2019, 1:08 p.m.