# truehist

0th

Percentile

##### Plot a Histogram

Creates a histogram on the current graphics device.

Keywords
hplot, dplot
##### Usage
truehist(data, nbins = "Scott", h, x0 = -h/1000,
breaks, prob = TRUE, xlim = range(breaks),
ymax = max(est), col = "cyan",
xlab = deparse(substitute(data)), bty = "n", …)
##### Arguments
data

numeric vector of data for histogram. Missing values (NAs) are allowed and omitted.

nbins

The suggested number of bins. Either a positive integer, or a character string naming a rule: "Scott" or "Freedman-Diaconis" or "FD". (Case is ignored.)

h

The bin width, a strictly positive number (takes precedence over nbins).

x0

Shift for the bins - the breaks are at x0 + h * (…, -1, 0, 1, …)

breaks

The set of breakpoints to be used. (Usually omitted, takes precedence over h and nbins).

prob

If true (the default) plot a true histogram. The vertical axis has a relative frequency density scale, so the product of the dimensions of any panel gives the relative frequency. Hence the total area under the histogram is 1 and it is directly comparable with most other estimates of the probability density function. If false plot the counts in the bins.

xlim

The limits for the x-axis.

ymax

The upper limit for the y-axis.

col

The colour for the bar fill: the default is colour 5 in the default R palette.

xlab

label for the plot x-axis. By default, this will be the name of data.

bty

The box type for the plot - defaults to none.

additional arguments to rect or plot.

##### Details

This plots a true histogram, a density estimate of total area 1. If breaks is specified, those breakpoints are used. Otherwise if h is specified, a regular grid of bins is used with width h. If neither breaks nor h is specified, nbins is used to select a suitable h.

##### Side Effects

A histogram is plotted on the current device.

##### References

Venables, W. N. and Ripley, B. D. (2002) Modern Applied Statistics with S. Fourth edition. Springer.

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