Mosaic plot in R

Mosaic plot is a graphical representation of two way contingency table which pictographically represents the relationship among two or more categorical variables. Plot is divided into rectangles. In this tutorial, let’s see how to create a mosaic plot in R

Concept behind the mosaic plot:

Let’s consider the UCBAdmisssions data set.

First Split: male and female ratio

male	2691
female	1835

Second split : admission and rejection on male and female

mosaic plot in R 2

Third split: admission and rejection across departments on male and female

		Male	Female
Department A	Admitted	512	89
	Rejected	313	19
Department B	Admitted	353	17
	Rejected	207	8
Department C	Admitted	120	202
	Rejected	205	391
Department D	Admitted	138	131
	Rejected	279	244
Department E	Admitted	53	94
	Rejected	138	299
Department F	Admitted	22	24
	Rejected	351	317

So the plot will be

mosaic plot in r

How to create mosaic plot in R:

Mosaic plot in R can be created with mosaicplot() function as shown below

# mosaic plot in R with mosaicplot function

mosaicplot(UCBAdmissions, sort = 3:1,
col = hcl(c(120, 10)),
main = "Student admissions at UC Berkeley")

first argument is the dataset
second argument is vector ordering of the variables
third argument is coloring the plot
last argument is the mosaic plot heading

so the final mosaic plot will be