How to change the order of facet labels in ggplot (custom facet wrap labels)

by

Don’t rely on the default ordering of levels imposed by factor() or internally by ggplot if the grouping variable you supply is not a factor. Set the levels explicitly yourself.

dat <- data.frame(x = runif(100), y = runif(100), 
                  Group = gl(5, 20, labels = LETTERS[1:5]))
head(dat)
with(dat, levels(Group))

What if I want them in this arbitrary order?

set.seed(1)
with(dat, sample(levels(Group)))

To do this, set the levels the way you want them.

set.seed(1) # reset the seed so I get the random order form above
dat <- within(dat, Group <- factor(Group, levels = sample(levels(Group))))
with(dat, levels(Group))

Now we can use this to have the panels drawn in the order we want:

require(ggplot2)
p <- ggplot(dat, aes(x = x)) + geom_bar()
p + facet_wrap( ~ Group)

Which produces:

facets wrapped

More Related Contents:

  1. Several questions on ggplot2 [closed]
  2. Multirow axis labels with nested grouping variables
  3. How to change legend title in ggplot
  4. Plot correlation matrix into a graph
  5. Using two scale colour gradients ggplot2 [duplicate]
  6. Get values and positions to label a ggplot histogram
  7. Adding percentage labels to a bar chart in ggplot2
  8. Avoid clipping of points along axis in ggplot
  9. How can I order the months chronologically in ggplot2 short of writing the months out?
  10. Issue with geom_text when using position_dodge
  11. Remove all of x axis labels in ggplot [duplicate]
  12. How to put a geom_sf produced map on top of a ggmap produced raster
  13. Connecting across missing values with geom_line
  14. In ggplot2, what do the end of the boxplot lines represent?
  15. Add a horizontal line to plot and legend in ggplot2
  16. How to use subscripts in ggplot2 legends [R]
  17. ggplot2: How to use same colors in different plots for same factor
  18. R: ggplot2 barplot and error bar
  19. ggplot2 – The unit of size
  20. Saving grid.arrange() plot to file
  21. How to plot a Stacked and grouped bar chart in ggplot?
  22. Apply a ggplot-function per group with dplyr and set title per group
  23. Sort legend in ggplot2
  24. ggplot: Boxplot of multiple column values [duplicate]
  25. How to increase the size of points in legend of ggplot2? [duplicate]
  26. Asymmetric expansion of ggplot axis limits
  27. How to adjust facet size manually
  28. How to change stacking order in stacked bar chart in R?
  29. Match legend text color in geom_text to symbol [duplicate]
  30. R – What algorithm does geom_density() use and how to extract points/equation of curves?

Leave a Comment