Add images to pie charts

Source: R/pie_addimages.R

This function allows to easily add some figures to you pie chart, taking information from the output of the pie_bake function. You can also customize the chart by specifying the colors of borders and labels, the title of the pie chart and where (and if) you want to print the percentages for each group.

pie_addimages(
  mypie,
  imglist,
  perc = "no",
  lbl_col = "black",
  border_col = "black",
  title = ""
)

Arguments

mypie

A ggplot object. The output from pie_bake, NOT from pie_bake_pro.
Don't focus on the template, only labels and values will be inherited.

imglist

A list of objects returned by and readJPEG used to fill slices. For optimal and fast results, we recommend the use of small files (5-10 kB).

perc

You can choose among:

  • 'no' : the percentages won't be displayed (default choice);

  • 'below' : the percentages will be displayed below the group labels;

  • 'right' : the percentages will be displayed next to the group labels.

lbl_col

A string containing the chosen color for the labels, default is "black".

border_col

A string containing the chosen color for the border of the pie chart, default is "black".

title

A string. If you want, you can specify the title of the graph.

Value

A ggplot object.

See also

Please note that this function is based on the imagepie function.

Examples

img5 <- jpeg::readJPEG(system.file("img", "pie.jpeg", package = "tastypie"))
imgs2 <- list(img5, img5, img5)

df2 <- data.frame(
  c("A", "B", "C"),
  c(300, 250, 600)
)

mypie2 <- pie_bake(df2, template = "rainbow1")

pie_addimages(
  mypie = mypie2,
  imglist = imgs2,
  perc = "right",
  lbl_col = "darkcyan",
  border_col = "orangered",
  title = "Example"
)