get_vars: Get formula variables
In paulponcet/bazar: Miscellaneous Basic Functions

Description Usage Arguments Value See Also Examples

The function get_vars extracts variable names from a formula.

1	get_vars(formula, data = NULL, intersection = TRUE)

`formula`	a formula.
`data`	data.frame or matrix. If not `NULL`, formulas with a dot `.` are permitted.
`intersection`	logical. If `TRUE` and `data` is not `NULL`, the intersection between variables found in the formula and `data` column names is returned.

a character vector, the variables found.

all.vars, get.vars

get_vars(y ~ x1 + x2 - x1)
get_vars(y ~ . - x1, data = data.frame(y = 1, x1 = 2, x2 = 3))
get_vars(y + z ~ x1 + x2 - x1 | x3)
get_vars(y ~ x1 + I(log(x2)))
get_vars(y ~ x1*x2)
get_vars(y ~ x1:x2)
get_vars(~ x1 + x2)