genvar (version 0.0.1.4)

keepvar: keeps some variables in the dataset and drops the others

Description

keeps some variables in the dataset and drops the others

Usage

keepvar(x)

Arguments

x

a varlist either of the form "var1 var2 var3" or in the form ~var1+var2+var3.

Value

returns NULL, invisibly

Examples

# NOT RUN {
use(cars, clear=TRUE)
keepvar("speed")
listif()
use(cars, clear=TRUE)
keepvar(~speed)
listif()
# }