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Generate Regular Expression to Detect Factors

Source: R/factor_regex.R
factor_regex.Rd

Primarily developed for use within tidycat::tidy_categorical()

Usage

factor_regex(m, at_start = TRUE)

Arguments

m

A model object, created using a function such as stats::lm()

at_start

Logical indicating whether or not to include ^ in the regular expression to begin search at start of string

Value

A character string for use as a regular expression.

Author

Guy J. Abel

Examples

m0 <- lm(formula = mpg ~ disp + as.factor(am)*as.factor(vs), data = mtcars)
factor_regex(m = m0)
#> [1] "(^as[.]factor[(]am[)]:as[.]factor[(]vs[)]|^as[.]factor[(]vs[)]|^as[.]factor[(]am[)]|^disp|^[(]Intercept[)])"