Significance Brackets for 'ggplot2'
Description
Enrich your 'ggplots' with group-wise comparisons.
This package provides an easy way to indicate if two groups are
significantly different. Commonly this is shown by a bracket on top
connecting the groups of interest which itself is annotated with the
level of significance (NS, *, **, ***). The package provides a single
layer (geom_signif()) that takes the groups for comparison and the
test (t.test(), wilcox.text() etc.) as arguments and adds the
annotation to the plot.