Reveal plot by aes

Turns a ggplot into a list of plots, showing data incrementally by an arbitrary aesthetic.

Usage

reveal_aes(p, aes = "group", order = NULL, max = 20)

Arguments

p

A ggplot2 object

aes

which aesthetic to reveal E.g.: group, colour, shape, linetype

order

(optional) A numeric vector specifying in which order to reveal levels of the specified aesthetic.

For example, if aes='shape' and the plot uses three shapes, order = c(3, 2, 1) will invert the order in which they are revealed.

Any shape not included in the vector will be omitted from the incremental plots. E.g.: with order = c(3, 1), the second shape is not shown.

By default, the first plot is blank, showing layout elements (title, legends, axes, etc) but no data. To omit the blank plot, include -1: e.g. order = c(-1, 3, 1), or order = -1.

max

maximum number of unique levels of aesthetic to be used

Value

A list of ggplot2 objects, which can be passed to reveal_save()

Examples

# Create full plot
library(ggplot2)

 p <- mtcars |>
   ggplot(aes(mpg, wt,
              color = factor(vs),
              group = factor(vs))) +
   geom_point(aes(shape=factor(am)), size=2) +
   geom_smooth(method="lm",
               formula = 'y ~ x',
               linewidth=1) 
 p


 plot_list <- reveal_aes(p, "shape")
 plot_list[[1]]

 plot_list[[2]]

 plot_list[[3]]

 plot_list[[4]]



# Save plots
reveal_save(plot_list, "myplot.png", width = 8, height = 4, path = tempdir())
#> 
#> ── Saving incremental plots ──
#> 
#> ✔ /tmp/Rtmp8djt8I/myplot_0.png
#> ✔ /tmp/Rtmp8djt8I/myplot_1.png
#> ✔ /tmp/Rtmp8djt8I/myplot_2.png
#> ✔ /tmp/Rtmp8djt8I/myplot_3_last.png

# Clean temp files
file.remove(list.files(path = tempdir(), pattern = "myplot", full.names = TRUE)) 
#> [1] TRUE TRUE TRUE TRUE