plotMeans: Plot the means

In multiUS: Functions for the Courses Multivariate Analysis and Computer Intensive Methods

Plot the means

Description

The function plots the means of several numerical variables by the levels of one categorical variable.

Usage

plotMeans(
  x,
  by,
  plotCI = TRUE,
  alpha = 0.05,
  ylab = "averages",
  xlab = "",
  plotLegend = TRUE,
  inset = 0.01,
  xleg = "topleft",
  legPar = list(),
  gap = 0,
  labels = NULL,
  ...
)

Arguments

x	Data frame with values of numeric variables.
by	Categorical variable that defines groups.
plotCI	Whether to plot confidence intervals or not, default is TRUE.
alpha	A confidence level for calculating confidence intervals (default is 0.05).
ylab	The title of y-axis.
xlab	The title of x-axis.
plotLegend	Whether to plot a legend or not, default is TRUE.
inset	Inset distance(s) from the margins as a fraction of the plot region when legend is placed by keyword.
xleg	Position of a legend, default is topleft.
legPar	Additional parameters for a legend. They have to be provided in a list format.
gap	Space left between the center of the error bar and the lines marking the error bar in units of the height (width). Defaults to 1.0
labels	Labels of x-axis.
...	Arguments passed to functions matplot and axis.

Value

A list with the following elements:

• means - mean values by groups.

• CI - widths of confidence intervals by groups.

Author(s)

Aleš Žiberna

Examples

plotMeans(x = mtcars[, c(1, 3, 5)], by = mtcars[,8])

multiUS documentation built on July 26, 2023, 3:02 p.m.