This is the most basic treemap you can do. The input dataset is simple: we just have 3 groups, and each has a value which we map to an area.

It allows to learn the syntax of the treemap library: you need to provide at least a dataset, the column that describes groups, and the column that gives the size of each group.

See graph # to learn how to add subgroups, and graph # to customize the appearance of the chart.

# library
library(treemap)

# Create data
group=c("group-1","group-2","group-3")
value=c(13,5,22)
data=data.frame(group,value)

# treemap
treemap(data,
            index="group",
            vSize="value",
            type="index"
            )