expss (version 0.10.5)

nest: Compute nested variable(-s) from several variables

Description

nest mainly intended for usage with table functions such as cro. See examples. %nest% is infix version of this function. You can apply nest on multiple-response variables/list of variables and data.frames.

Usage

nest(...)
x %nest% y

Arguments

...

vectors/data.frames/lists

x

vector/data.frame/list

y

vector/data.frame/list

Value

vector/data.frame/list

See Also

See also interaction

Examples

# NOT RUN {
data(mtcars)

mtcars = apply_labels(mtcars,
                      cyl = "Number of cylinders",
                      vs = "Engine",
                      vs = num_lab("
                             0 V-engine 
                             1 Straight engine
                             "),
                      am = "Transmission",
                      am = num_lab("
                             0 Automatic 
                             1 Manual
                             "),
                      carb = "Number of carburetors"
)

calc(mtcars, cro(cyl, am %nest% vs))

# list of variables
calc(mtcars, cro(cyl, am %nest% list(vs, cyl)))

# list of variables - multiple banners/multiple nesting
calc(mtcars, cro(cyl, list(total(), list(am, vs) %nest% cyl)))

# three variables 
calc(mtcars, cro(am %nest% vs %nest% carb, cyl))

# the same with usual version
calc(mtcars, cro(cyl, nest(am, vs)))

# three variables 
calc(mtcars, cro(nest(am, vs, carb), cyl))
# }