In this section, I will show you how to generate bar charts and bar plots using R. I think whether you call a particular graphic a bar chart or a bar plot is up to you. There are minor differences between bar charts and bar plots. In both cases, we have bars representing counts; we display them across your graphic. The steps (and results) involved are similar.
R programming allows us to create bar charts in a variety of ways. The standard function in R is the barplot function. The barplot function only requires a list of the heights to be displayed. All of the following parameters are optional.
The barplot function is used as follows:
> barplot(data)
The various parameters are as follows:
height, width = 1, space = NULL,
names.arg = NULL, legend.text = NULL, beside = FALSE,
horiz = FALSE, density = NULL, angle = 45,
col = NULL, border = par("fg"),
main = NULL, sub = NULL, xlab = NULL, ylab = NULL,
xlim = NULL...