Expand covariates in multiple permuations. Like expand.grid, but with 1, 2, ..., n variables chosen

create_df_predictors takes a vector of variable names and creates a dataframe of

create_df_predictors(names, n_vars = 3)

Arguments

names

The names of the dataframe to be expanded

n_vars

Number of variables to be selected, e.g. expand.grid is called with 1:n_vars variables, and then results are combined and sorted to remove duplicates

Value

an expanded data frame