R : Data Frames

Data frames are used to store tabular data. Unlike matrices, data frames can store any kind of data in each column.

> table1 = data.frame(id=1:4, firstName=c("Hari Krishna","Joel","Rama Krishna","Sudheer"))
> table1
  id    firstName
1  1 Hari Krishna
2  2         Joel
3  3 Rama Krishna
4  4      Sudheer
> 
> nrow(table1)
[1] 4
> 
> ncol(table1)
[1] 2

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