Delete a column from a data frame in R

Here is a quick tip to delete a column from a data frame in R:

Lets assume our data frame is:

> data
   code           sector                           industry
1   901 Basic Industries                  Building and Related
2   902 Basic Industries                  Chemicals
3   903 Basic Industries                  Containers
4   905 Basic Industries                  Fertilizers
5   906 Basic Industries                  Forest Products
6   904 Basic Industries                  Metal Fabricators and Distributors
7   991 Basic Industries                  Mining
8   912 Basic Industries                  Multi-Industry Basic
9   910 Basic Industries                  Nonferrous Base Metals
10  907 Basic Industries                  Paper

To delete column do:

data$columnName  <- NULL

//columnName is the column you wish to delete

example:

> data$sector <- NULL
> data
   code                           industry
1   901                      Building and Related
2   902                      Chemicals
3   903                      Containers
4   905                      Fertilizers
5   906                      Forest Products
6   904                      Metal Fabricators and Distributors
7   991                      Mining
8   912                      Multi-Industry Basic
9   910                      Nonferrous Base Metals
10  907                      Paper