draw.triple.venn: Draw a Venn Diagram with Three Sets

In VennDiagram: Generate High-Resolution Venn and Euler Plots

Draw a Venn Diagram with Three Sets

Description

Creates a Venn diagram with three sets. Creates Euler diagrams when the dataset meets certain conditions.

Usage

draw.triple.venn(area1, area2, area3, n12, n23, n13, n123, category =
    rep("", 3), rotation = 1, reverse = FALSE, euler.d =
    TRUE, scaled = TRUE, lwd = rep(2, 3), lty =
    rep("solid", 3), col = rep("black", 3), fill = NULL,
    alpha = rep(0.5, 3), label.col = rep("black", 7), cex
    = rep(1, 7), fontface = rep("plain", 7), fontfamily =
    rep("serif", 7), cat.pos = c(-40, 40, 180), cat.dist =
    c(0.05, 0.05, 0.025), cat.col = rep("black", 3),
    cat.cex = rep(1, 3), cat.fontface = rep("plain", 3),
    cat.fontfamily = rep("serif", 3), cat.just =
    list(c(0.5, 1), c(0.5, 1), c(0.5, 0)), cat.default.pos
    = "outer", cat.prompts = FALSE, rotation.degree = 0,
    rotation.centre = c(0.5, 0.5), ind = TRUE, sep.dist =
    0.05, offset = 0, cex.prop = NULL, print.mode = "raw",
    sigdigs = 3, direct.area = FALSE, area.vector = 0,
    ...)

Arguments

area1	The size of the first set
area2	The size of the second set
area3	The size of the third set
n12	The size of the intersection between the first and the second set
n23	The size of the intersection between the second and the third set
n13	The size of the intersection between the first and the third set
n123	The size of the intersection between all three sets
category	A vector (length 3) of strings giving the category names of the sets
rotation	1 (default), 2, or 3 indicating clockwise rotation of the three sets from the default arrangement
reverse	Boolean indicating whether the diagram should be mirrored long the vertical axis or not
euler.d	Boolean indicating whether to draw Euler diagrams when conditions are met or not (Venn Diagrams with moveable circles)
scaled	Boolean indicating whether to scale circle sizes in certain Euler diagrams according to set sizes or not (euler.d must be true to enable this)
lwd	A vector (length 3) of numbers giving the width of the circles' circumferences
lty	A vector (length 3) giving the dash pattern of the circles' circumferences
col	A vector (length 3) giving the colours of the circles' circumferences
fill	A vector (length 3) giving the colours of the circles' areas
alpha	A vector (length 3) giving the alpha transparency of the circles' areas
label.col	A vector (length 7) giving the colours of the areas' labels
cex	A vector (length 7) giving the size of the areas' labels
fontface	A vector (length 7) giving the fontface of the areas' labels
fontfamily	A vector (length 7) giving the fontfamily of the areas' labels
cat.pos	A vector (length 3) giving the positions (in degrees) of the category names along the circles, with 0 (default) at 12 o'clock
cat.dist	A vector (length 3) giving the distances (in npc units) of the category names from the edges of the circles (can be negative)
cat.cex	A vector (length 3) giving the size of the category names
cat.col	A vector (length 3) giving the colours of the category names
cat.fontface	A vector (length 3) giving the fontface of the category names
cat.fontfamily	A vector (length 3) giving the fontfamily of the category names
cat.just	List of 3 vectors of length 2 indicating horizontal and vertical justification of each category name
cat.default.pos	One of c('outer', 'text') to specify the default location of category names (cat.pos and cat.dist are handled differently)
cat.prompts	Boolean indicating whether to display help text on category name positioning or not)
rotation.degree	Number of degrees to rotate the entire diagram
rotation.centre	A vector (length 2) indicating (x,y) of the rotation centre
ind	Boolean indicating whether the function is to automatically draw the diagram before returning the gList object or not
sep.dist	Number between 0 and 1 giving the distance between circles in certain Euler diagrams with mutually exclusive sets
offset	Number giving the amount of offset from the centre in certain Euler diagrams with inclusive sets
cex.prop	A function or string used to rescale areas
print.mode	Can be either 'raw' or 'percent'. This is the format that the numbers will be printed in. Can pass in a vector with the second element being printed under the first
sigdigs	If one of the elements in print.mode is 'percent', then this is how many significant digits will be kept
direct.area	If this is equal to true, then the vector passed into area.vector will be directly assigned to the areas of the corresponding regions. Only use this if you know which positions in the vector correspond to which regions in the diagram
area.vector	An argument to be used when direct.area is true. These are the areas of the corresponding regions in the Venn Diagram
...	Additional arguments to be passed, including margin, which indicates amount of whitespace around the final diagram in npc units

Details

Euler diagrams are drawn for 19 special cases if euler.d == TRUE. Certain Euler diagrams make use of the scaled, sep.dist, or offset arguments specific to two-set Venn diagrams where appropriate. The function defaults to placing the three circles in a triangular arrangement with two sets on top and one set below. The circles correspond to area1, area2 and area3 in a clockwise fashion with area1 on the top left. N.B. General scaling for three-set Venn diagrams are disabled due to potentially misleading visual representation of the data. To re-enable, assign any value to variable overrideTriple.

Value

Returns an object of class gList containing the grid objects that make up the diagram. Also displays the diagram in a graphical device unless specified with ind = FALSE. Grid::grid.draw can be used to draw the gList object in a graphical device.

Author(s)

Hanbo Chen

Examples

# A simple three-set diagram
venn.plot <- draw.triple.venn(65, 75, 85,
 35, 15, 25, 5, c("First", "Second", "Third"));
grid.draw(venn.plot);
grid.newpage();

# A more complicated diagram
venn.plot <- draw.triple.venn(
	area1 = 65,
	area2 = 75,
	area3 = 85,
	n12 = 35,
	n23 = 15,
	n13 = 25,
	n123 = 5,
	category = c("First", "Second", "Third"),
	fill = c("blue", "red", "green"),
	lty = "blank",
	cex = 2,
	cat.cex = 2,
	cat.col = c("blue", "red", "green")
	);
grid.draw(venn.plot);
grid.newpage();

# Demonstrating an Euler diagram
venn.plot <- draw.triple.venn(20, 40, 60, 0, 0, 0, 0,
 c("First", "Second", "Third"), sep.dist = 0.1, rotation.degree = 30);

# Writing to file
tiff(
    filename = tempfile(
        pattern = 'Triple_Venn_diagram',
        fileext = '.tiff'
        ),
    compression = "lzw"
    );
    
grid.draw(venn.plot);
dev.off();

VennDiagram documentation built on April 13, 2022, 1:06 a.m.