View source: R/formula-utils.R
reop_formula | R Documentation |
model.frame()
assumes that certain operations (e.g. /
, *
, ^
) have special
meanings. These can be inhibited using I()
. This function inserts I()
into
a formula when encountering a specified operator or parens.
reop_formula(x, ops = c("/", "*", "^"))
x |
a formula (or a call of length 2 or 3, for recursive processing of formulas). Other objects are returned unchanged. |
ops |
a vector of character representions of operators to be inhibited. |
a formula with I()
inserted where required to inhibit interpretation/conversion.
reop_formula(y ~ x * y)
reop_formula(y ~ (x * y))
reop_formula(y ~ x ^ y)
reop_formula(y ~ x * y ^ z)
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