why are there colors and comparisons missing?

Question

I'm using this command via ggstatsplot:

ggbetweenstats(
  data = df_sub
  , x = Generator
  , y = hours
  , outlier.tagging  = TRUE
  , map_signif_level = TRUE
  , ggsignif.args    = list(textsize = 4, tip_length = 0.01)
  , results.subtitle = TRUE) + 
  theme_bw() +
  guides(fill=guide_legend("Class"))

and receive this plot:

which is fine, except that those three group levels to the right are missing data points and colors. In addition, some statistical comparisons/tests are missing, or? E.g., the one far to the right is compared only once.

I cropped the image slightly as the data is confidential.

Answer 1

Some discrete color scales only have just a few available colors. The default color scheme hue has more colors:

ggbetweenstats(
  data = df_sub,
  x = Generator, 
  y = hours,
  outlier.tagging  = TRUE,
  map_signif_level = TRUE,
  ggsignif.args    = list(textsize = 4, tip_length = 0.01),
  results.subtitle = TRUE
  ) + 
  theme_bw() +
  scale_color_hue() +
  guides(fill=guide_legend("Class")

To have more control over the tests to make you can just use the underlying packages ggpubr and ggplot2.