vtree (version 5.6.5)

build.data.frame: Build a data frame to display with vtree

Description

Build a data frame by specifying variable names and patterns of values together with frequencies.

Usage

build.data.frame(varnames, ...)

Value

A data frame.

Arguments

varnames

A vector of variable names.

...

Lists of patterns and the frequency of each pattern. When a pattern is shorter than the list of variable names (for example, 3 variable names but only 2 values in the pattern), NA's are substituted for the missing variable names.

Author

Nick Barrowman <[e-mail]>

Details

Suppose varnames=c("animal","size","hair"), then one pattern would be list("dog","small","short",4), which specifies 4 dogs that are small and short-haired. Another pattern could be list("cat","large","long",101), specifying 101 large cats.

Examples

# Number of countries in Africa, whether population is over 30 million or not,
# and whether landlocked or not.
# https://www.worldometers.info/geography/how-many-countries-in-africa/
#
df <- build.data.frame(
 c("continent","population","landlocked"),
 list("Africa","Over 30 million","landlocked",2),
 list("Africa","Over 30 million","not landlocked",12),
 list("Africa","Under 30 million","landlocked",14),
 list("Africa","Under 30 million","not landlocked",26))