Package ggplot2 is a unique system which has many plotting functions. It uses ggplot() function to start the plot, and uses aes() for aesthetic mapping of dataset to the plotting. Other layers such as geom_bar() for a bar plot, coordinate systems etc can be added later as well.

> install.packages("ggplot2",repos="http://cran.r-project.org",dep=TRUE)
> library(ggplot2)
> gg <- ggplot(trees, aes(y=Volume, x=Height)) #trees is a builtin dataset
> gg + geom_bar(stat="identity",color="blue",fill="red")

geom_boxplot() function for box plot:

> gg <- ggplot(CO2, aes(Plant,uptake))#CO2 is a builtin dataset
> gg + geom_boxplot()

> gg + geom_boxplot(aes(color=Type))

geom_point() function for drawing points:

> gg <- ggplot(trees, aes(Height,Volume))
> gg + geom_point(color="green")

geom_histogram() function for drawing histograms:

> gg <- ggplot(CO2,aes(uptake))
> gg + geom_histogram(bins=20,color="green",fill="yellow")

It can also plot time series data. Following code downloads the stock trading data and plots it:

> install.packages("tseries",repos="http://cran.r-project.org",dep=TRUE)
> library(tseries)
> rcl <- get.hist.quote("rcl")  #stocks data of Royal Caribbean Ltd.
time series starts 1993-04-28
time series ends   2020-03-27
> head(rcl)
             Open   High    Low  Close
1993-04-28 9.1250 9.3750 9.0000 9.1250
1993-04-29 9.1250 9.3125 9.1250 9.3125
1993-04-30 9.3750 9.3750 9.1250 9.1875
1993-05-03 9.1250 9.1875 9.0625 9.1875
1993-05-04 9.1875 9.1875 8.9375 9.0625
1993-05-05 9.0000 9.0625 8.8750 8.8750
>autoplot(rcl)

Following is the complete data of the stock RCL:

Plotting functions list of package "ggplot2":