freqpoly: Turn histograms into frequency polygons

In mosaic: Project MOSAIC Statistics and Mathematics Teaching Utilities

Turn histograms into frequency polygons

Description

Turn histograms into frequency polygons

Usage

freqpoly(x, plot = TRUE, ...)

hist2freqpolygon(hist)

## S3 method for class 'freqpolygon'
plot(
  x,
  freq = equidist,
  col = graphics::par("fg"),
  lty = NULL,
  lwd = 1,
  main = paste("Frequency polygon of", paste(x$xname, collapse = "\n")),
  sub = NULL,
  xlab = x$xname,
  ylab,
  xlim = range(x$x),
  ylim = NULL,
  axes = TRUE,
  labels = FALSE,
  add = FALSE,
  ann = TRUE,
  ...
)

Arguments

x	a vector of values for which a frequency polygon is desired.
plot	a logical indicating if a plot should be generated.
...	additional arguments passed on to hist().
hist	a histogram object produced by link{hist}().
freq	A logical indicating whether the vertical scale should be frequency (count).
col	A color for the frequency polygon.
lty	An integer indicating the line type.
lwd	An integer indicating the line width.
main	A title for the plot.
sub	A sub-title for the plot.
xlab	Label for the horizontal axis.
ylab	Label for the vertical axis.
xlim	A numeric vector of length 2.
ylim	A numeric vector of length 2.
axes	A logical indicating whether axes should be drawn.
labels	A logical indicating whether labels should be printed or a character vector of labels to add.
add	A logical indicating whether the plot should be added to the current plot
ann	A logical indicating whether annotations (titles and axis titles) should be plotted.

Value

An object of class "freqpoly" (invisibly). Additionally, if plot is TRUE, a plot is generated.

Examples

freqpoly(faithful$eruptions)
bks <- c(0, 1, 1.5, 2, 3, 3.5, 4, 4.5, 5, 7)
hist(faithful$eruptions, breaks = bks)
freqpoly(faithful$eruptions, col = rgb(0,0,1,.5), lwd = 5, breaks = bks, add = TRUE)

mosaic documentation built on May 29, 2024, 5:27 a.m.