finalfit: ff_interaction – R documentation

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ff_interaction

Make an interaction variable and add to dataframe

Description

Combine two factor variables to make an interaction variable. Factor level order is determined by the order in the variables themselves. Note, names of the factor variables should not be quoted. The name of the variable is created from the names of the two factors. The variable is also labelled with a name derived from any pre-existing labels.

Usage

ff_interaction(.data, ..., levels_sep = "|", var_sep = "__",
  label_sep = ":")

finalfit_interaction(.data, ..., levels_sep = "|", var_sep = "__",
  label_sep = ":")

Arguments

`.data`	Data frame.
`...`	The unquoted names of two factors.
`levels_sep`	Quoted character: how levels are separated in new variable.
`var_sep`	Quoted character: how variable name is separated.
`label_sep`	Quoted character: how variable label is spearated

Value

Original data frame with new variable added via 'dplyr::mutate'.

Examples

colon_s %>%
  ff_interaction(sex.factor, perfor.factor) %>%
    summary_factorlist("mort_5yr", "sex.factor__perfor.factor")

finalfit

Quickly Create Elegant Regression Results Tables and Plots when Modelling

v1.0.2

MIT + file LICENCE

Authors

Ewen Harrison [aut, cre], Tom Drake [aut], Riinu Ots [aut]

Initial release