iscamdotplot: A dot plot

In ISCAM: Companion to the Book "Investigating Statistical Concepts, Applications, and Methods"

A dot plot

Description

dotplot creates a horizontal dot plot. If a second categorical variable is given, the data is grouped by this variable. Use names & mytitle to specify the labels and title.

Usage

iscamdotplot(
  response,
  explanatory = NULL,
  main = "",
  xlab = substitute(response),
  ylab = substitute(explanatory)
)

Arguments

response	Vector of numeric values to plot.
explanatory	(optional) second categorical variable to group by.
main	(optional) title for the plot.
xlab	(optional) x-axis label for the plot.
ylab	(optional) y-axis label for the plot. Only displayed when explanatory is provided.

Value

A dot plot.

Examples

iscamdotplot(
  mtcars$cyl,
  main = "mtcars Cylinders Dotplot",
  xlab = "Number of Cylinders"
)
iscamdotplot(
  mtcars$mpg,
  mtcars$am,
  main = "Automatic Cars Have Better Mileage on Average",
  xlab = "Mileage (miles per gallon)",
  ylab = "Automatic (yes coded as 1)"
)

ISCAM documentation built on Feb. 12, 2026, 5:07 p.m.