venn_plot function

Draw Venn diagrams

Produces ggplot2-based Venn plots for 2, 3 or 4 sets. A Venn diagram shows all possible logical relationships between several sets of data.

venn_plot(
  ...,
  names = NULL,
  show_elements = FALSE,
  split_labels = FALSE,
  split_each = 4,
  show_sets = FALSE,
  fill = ggplot_color(4),
  alpha = 0.5,
  stroke_color = "white",
  stroke_alpha = 1,
  stroke_size = 1,
  stroke_linetype = "solid",
  name_color = "black",
  name_size = 6,
  text_color = "black",
  text_size = 4,
  label_sep = ","
)

Arguments

• ...: A list or a comma-separated list of vectors in the same class. If vector contains duplicates they will be discarded. If the list doesn't have names the sets will be named as "set_1", "Set_2", "Set_3" and so on. If vectors are given in ..., the set names will be named with the names of the objects provided.
• names: By default, the names of the sets are set as the names of the objects in ... (names = NULL). Use names to override this default.
• show_elements: Show set elements instead of count. Defaults to FALSE.
• split_labels: Splits the element labels into new lines each split_each elements? Defaults to TRUE. This is useful to split labels into several lines when show_elements = TRUE is used.
• split_each: The number of elements that will apper in each line when split_labels = TRUE is used.
• show_sets: Show set names instead of count. Defaults to FALSE.
• fill: Filling colors in circles. Defaults to the default ggplot2 color palette. A vector of length 1 will be recycled.
• alpha: Transparency for filling circles. Defaults to 0.5.
• stroke_color: Stroke color for drawing circles.
• stroke_alpha: Transparency for drawing circles.
• stroke_size: Stroke size for drawing circles.
• stroke_linetype: Line type for drawing circles. Defaults to "solid".
• name_color: Text color for set names. Defaults to "black".
• name_size: Text size for set names.
• text_color: Text color for intersect contents.
• text_size: Text size for intersect contents.
• label_sep: The separator for labs when show_elements = TRUE. Defaults to ",".

Returns

A ggplot object.

Examples

library(metan)
(A <- letters[1:4])
(B <- letters[2:5])
(C <- letters[3:7])
(D <- letters[4:12])

# create a Venn plot
venn_plot(A, B)

# Three sets
venn_plot(A, B, C)

# Four sets
venn_plot(A, B, C, D)

# Use a list
dfs <- list(A = A, B = B, C = C, D = D)
venn_plot(dfs,
          show_elements = TRUE,
          fill = c("red", "blue", "green", "gray"),
          stroke_color = "black",
          alpha = 0.8,
          text_size = 8,
          label_sep = ".")

Author(s)

Tiago Olivoto tiagoolivoto@gmail.com