R language drawing ggplot2 seasonal graph

If you are using ts Or time series objects of class xts, You can use the Draw a seasonal chart to see seasonal fluctuations forecast::ggseasonplot. Here's an example of using this machine AirPassengers and nottem Examples of time series .

You can see the increase of air passenger traffic over the years and the repeated seasonal pattern of traffic . Nottingham, on the other hand, has not shown an overall increase in temperature over the years , But they certainly follow seasonal patterns .

library(ggplot2)
library(forecast)
theme_set(theme_classic())

# Subset data
nottem_small <-