How to do it...

To be able to read data from R files and libraries, follow these steps:

1. Load data from the R data files into memory:

> load("test.Rdata") 
> ord <- readRDS("order.rds")

1. The datasets package is loaded in the R environment by default and contains the iris and cars datasets. To load these datasets data into memory, use the following code:

> data(iris) 
> data(list(cars,iris)) 

The first command loads only the iris dataset, and the second loads both the cars and iris datasets.