plotDensityHistogram: Histogram with a density curve

In rcompanion: Functions to Support Extension Education Program Evaluation

Histogram with a density curve

Description

Produces a histogram for a vector of values and adds a density curve of the distribution.

Usage

plotDensityHistogram(
  x,
  prob = FALSE,
  col = "gray",
  main = "",
  linecol = "black",
  lwd = 2,
  adjust = 1,
  bw = "nrd0",
  kernel = "gaussian",
  ...
)

Arguments

x	A vector of values.
prob	If FALSE, then counts are displayed in the histogram. If TRUE, then the density is shown.
col	The color of the histogram bars.
main	The title displayed for the plot.
linecol	The color of the line in the plot.
lwd	The width of the line in the plot.
adjust	Passed to density. A lower value makes the density plot smoother.
bw	Passed to density.
kernel	Passed to density.
...	Other arguments passed to hist.

Details

The function relies on the hist function. The density curve relies on the density function.

Value

Produces a plot. Returns nothing.

Author(s)

Salvatore Mangiafico, [e-mail]

References

https://rcompanion.org/handbook/C_04.html

See Also

plotNormalHistogram, plotNormalDensity

Examples

### Plot of residuals from a model fit with lm
data(Catbus)
model = lm(Steps ~ Gender + Teacher,
           data = Catbus)
plotDensityHistogram(residuals(model))          

rcompanion documentation built on May 29, 2024, 8:42 a.m.