We can make pie charts in R by using the pie() function. Pie charts show the percentage distribution of a single variable in the form of parts of a circle. They are the default for the plot() function. Scatterplots usually show two variables in a 2D cartesian plane. The barplot() function can be used to plot a bar-chart in R. plot(airquality$Ozone, type=”h”)īar charts show categorical data in the form of rectangular bars.

This gives us a histogram like a high-density vertical line plot. We can also use the plot() function to make a histogram by setting the type argument to h. We can plot a histogram in R by using the hist() function.

It shows the spread and shape of continuous data. Histograms are a means to show frequency distribution graphically. Let us take a look at the various types of graphs one-by-one: 1. They also include the incredible plot() function that can render multiple kinds of graphs depending on the input arguments. R base packages come with functions like the hist() function, the boxplot() function, the barplot() function, etc.

R is believed to be the best at data visualization for good reason.

Graphical tools for data analysis