Creating a data.table

Just like how the data.frame() function can be used to create a data frame, you can create a data.table using the data.table() function. In this exercise, you will create the following data.table:

X
   id value
1:  a   0.5
2:  b   1.0
3:  c   1.5

Load the data.table package.
Create the data.table X shown above. Note that the column id is of type character and value is of type numeric.

Exercise

Creating a data.table

Instructions