anova_vis: Analysis of Variance (ANOVA) Graphic

In jbryer/VisualStats: Visualizations for Statistical Tests

Analysis of Variance (ANOVA) Graphic

Description

This is a ggplot2 adaptation of Pruzek and Helmreich's granova::granova.1w function. This also provides parameters to customize which features are included on the plot.

Usage

anova_vis(
  Y,
  group,
  plot_datapoints = TRUE,
  plot_group_means = TRUE,
  plot_boxplot = FALSE,
  plot_group_variances = TRUE,
  plot_group_sd = TRUE,
  plot_ms_within = TRUE,
  plot_ms_between = TRUE,
  plot_between_group_variances = FALSE,
  plot_unit_line = TRUE,
  plot_grand_mean = TRUE,
  plot_sd_line = FALSE,
  plot_pooled_sd = FALSE,
  xlab = "Deviation Contrast",
  ylab = "Dependent Variable",
  grand_mean_col = "blue",
  sd_line_col = "maroon",
  pooled_sd_col = "steelblue3",
  ms_within_col = "#fdc086",
  ms_between_col = "#7fc97f",
  box_width = 0.04,
  box_color = "grey50",
  plot_group_labels = FALSE,
  ...
)

Arguments

Y	the dependent variable.
group	the independent, or grouping, variable.
plot_datapoints	whether to plot the individual observations.
plot_group_means	whether to plot the group means.
plot_boxplot	whether to plot the box plots.
plot_group_variances	whether to plot the group variances.
plot_group_sd	whether to plot the group standard deviations.
plot_ms_within	whether to plot the mean square within.
plot_ms_between	whether to plot the mean square between.
plot_between_group_variances	whether to plot the between group variances.
plot_unit_line	whether to plot the unit line (i.e. y = x).
plot_grand_mean	whether to plot the grand mean.
plot_sd_line	whether to plot the standard deviation.
plot_pooled_sd	whether to plot the pooled standard deviation.
xlab	label for the x-axis.
ylab	label for the y-axis.
grand_mean_col	color for the grand mean.
sd_line_col	color for the standard deviation line.
pooled_sd_col	color for the pooled standard deviation.
ms_within_col	color for the mean square within.
ms_between_col	color for the mean square between.
box_width	width of the box express as a percentage of the width of the x-axis.
box_color	color of the box plots.
plot_group_labels	whether to plot the group labels on the figure.
...	currently unused.

Value

a ggplot2 expression.

References

Pruzek & Helmreich (2010). Elemental Graphics for Analysis of Variance using the R Package granova

Examples

data(hand_washing)
anova_vis(hand_washing$Bacterial_Counts, hand_washing$Method)

jbryer/VisualStats documentation built on Feb. 27, 2025, 6:19 p.m.