Violin plots for group or condition comparisons in within-subjects designs repeated across all levels of a grouping variable.
A combined plot of comparison plot created for levels of a grouping variable.
grouped_ggwithinstats( data, ..., grouping.var, plotgrid.args = list(), annotation.args = list() )
data: A data frame (or a tibble) from which variables specified are to be taken. Other data types (e.g., matrix,table, array, etc.) will not
be accepted. Additionally, grouped data frames from {dplyr} should be ungrouped before they are entered as data.
...: Arguments passed on to ggwithinstats
point.path,centrality.path: Logical that decides whether individual data points and means, respectively, should be connected using ggplot2::geom_path(). Both default to TRUE. Note that point.path
argument is relevant only when there are two groups (i.e., in case of a **t**-test). In case of large number of data points, it is advisable to set `point.path = FALSE` as these lines can overwhelm the plot.
centrality.path.args,point.path.args: A list of additional aesthetic arguments passed on to ggplot2::geom_path() connecting raw data points and mean points.
xlab: Label for x axis variable. If NULL (default), variable name for x will be used.
ylab: Labels for y axis variable. If NULL (default), variable name for y will be used.
p.adjust.method: Adjustment method for p-values for multiple comparisons. Possible methods are: "holm" (default), "hochberg", "hommel", "bonferroni", "BH", "BY", "fdr", "none".
pairwise.display: Decides which pairwise comparisons to display. Available options are:
* `"significant"` (abbreviation accepted: `"s"`)
* `"non-significant"` (abbreviation accepted: `"ns"`)
* `"all"`
You can use this argument to make sure that your plot is not uber-cluttered when you have multiple groups being compared and scores of pairwise comparisons being displayed. If set to `"none"`, no pairwise comparisons will be displayed.
bf.message: Logical that decides whether to display Bayes Factor in favor of the null hypothesis. This argument is relevant only for parametric test (Default: TRUE).
results.subtitle: Decides whether the results of statistical tests are to be displayed as a subtitle (Default: TRUE). If set to FALSE, only the plot will be returned.
subtitle: The text for the plot subtitle. Will work only if results.subtitle = FALSE.
caption: The text for the plot caption. This argument is relevant only if bf.message = FALSE.
centrality.plotting: Logical that decides whether centrality tendency measure is to be displayed as a point with a label (Default: TRUE). Function decides which central tendency measure to show depending on the type argument.
* mean for parametric statistics
* median for non-parametric statistics
* trimmed mean for robust statistics
* MAP estimator for Bayesian statistics
If you want default centrality parameter, you can specify this using `centrality.type` argument.
centrality.type: Decides which centrality parameter is to be displayed. The default is to choose the same as type argument. You can specify this to be:
* `"parameteric"` (for mean )
* `"nonparametric"` (for median )
* `robust` (for trimmed mean )
* `bayes` (for MAP estimator )
Just as `type` argument, abbreviations are also accepted.
point.args: A list of additional aesthetic arguments to be passed to the ggplot2::geom_point().
boxplot.args: A list of additional aesthetic arguments passed on to ggplot2::geom_boxplot().
violin.args: A list of additional aesthetic arguments to be passed to the ggplot2::geom_violin().
ggplot.component: A ggplot component to be added to the plot prepared by {ggstatsplot}. This argument is primarily helpful for grouped_
variants of all primary functions. Default is `NULL`. The argument should be entered as a `{ggplot2}` function or a list of `{ggplot2}` functions.
package,palette: Name of the package from which the given palette is to be extracted. The available palettes and packages can be checked by running View(paletteer::palettes_d_names).
centrality.point.args,centrality.label.args: A list of additional aesthetic arguments to be passed to ggplot2::geom_point() and ggrepel::geom_label_repel() geoms, which are involved in mean plotting.
ggsignif.args: A list of additional aesthetic arguments to be passed to ggsignif::geom_signif().
ggtheme: A {ggplot2} theme. Default value is theme_ggstatsplot(). Any of the {ggplot2} themes (e.g., ggplot2::theme_bw()), or themes from extension packages are allowed (e.g., ggthemes::theme_fivethirtyeight(), hrbrthemes::theme_ipsum_ps(), etc.). But note that sometimes these themes will remove some of the details that {ggstatsplot} plots typically contains. For example, if relevant, ggbetweenstats() shows details about multiple comparison test as a label on the secondary Y-axis. Some themes (e.g. ggthemes::theme_fivethirtyeight()) will remove the secondary Y-axis and thus the details as well.
x: The grouping (or independent) variable from data. In case of a repeated measures or within-subjects design, if subject.id argument is not available or not explicitly specified, the function assumes that the data has already been sorted by such an id by the user and creates an internal identifier. So if your data is not sorted, the results can
be inaccurate when there are more than two levels in `x` and there are `NA`s present. The data is expected to be sorted by user in subject-1, subject-2, ..., pattern.
y: The response (or outcome or dependent) variable from data.
type: A character specifying the type of statistical approach:
* `"parametric"`
* `"nonparametric"`
* `"robust"`
* `"bayes"`
You can specify just the initial letter.
digits: Number of digits for rounding or significant figures. May also be "signif" to return significant figures or "scientific"
to return scientific notation. Control the number of digits by adding the value as suffix, e.g. `digits = "scientific4"` to have scientific notation with 4 decimal places, or `digits = "signif5"` for 5 significant figures (see also `signif()`).
conf.level: Scalar between 0 and 1 (default: 95%
confidence/credible intervals, `0.95`). If `NULL`, no confidence intervals will be computed.
effsize.type: Type of effect size needed for parametric tests. The argument can be "eta" (partial eta-squared) or "omega" (partial omega-squared).
bf.prior: A number between 0.5 and 2 (default 0.707), the prior width to use in calculating Bayes factors and posterior estimates. In addition to numeric arguments, several named values are also recognized: "medium", "wide", and "ultrawide", corresponding to r scale values of 1/2, sqrt(2)/2, and 1, respectively. In case of an ANOVA, this value corresponds to scale for fixed effects.
tr: Trim level for the mean when carrying out robust tests. In case of an error, try reducing the value of tr, which is by default set to 0.2. Lowering the value might help.
nboot: Number of bootstrap samples for computing confidence interval for the effect size (Default: 100L).
grouping.var: A single grouping variable.
plotgrid.args: A list of additional arguments passed to patchwork::wrap_plots(), except for guides argument which is already separately specified here.
annotation.args: A list of additional arguments passed to patchwork::plot_annotation().
# for reproducibility set.seed(123) library(dplyr, warn.conflicts = FALSE) library(ggplot2) # the most basic function call grouped_ggwithinstats( data = filter(bugs_long, condition %in% c("HDHF", "HDLF")), x = condition, y = desire, grouping.var = gender, type = "np", # additional modifications for **each** plot using `{ggplot2}` functions ggplot.component = scale_y_continuous(breaks = seq(0, 10, 1), limits = c(0, 10)) )
ggwithinstats, ggbetweenstats, grouped_ggbetweenstats
Useful links