formula_vars: Extract underlying column names from RHS formula strings
In SEQTaRget: Sequential Trial Emulation
View source: R/internal_misc.R
formula_vars R Documentation
Extract underlying column names from RHS formula strings
Description
Wraps all.vars(as.formula(...)) so that function-wrapped terms in
formula strings (e.g. ns(followup, df = 4), I(x^2), factor(grp))
resolve to their underlying variable names rather than being treated
as raw column names.
Usage
formula_vars(x)
Arguments
x
character vector of RHS formula strings (may contain +, *, :,
and function wrappers). NA / empty entries are ignored.
Value
character vector of unique variable names referenced by x.
SEQTaRget documentation built on May 21, 2026, 9:07 a.m.
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View source: R/internal_misc.R
| formula_vars | R Documentation |
Extract underlying column names from RHS formula strings
Description
Wraps all.vars(as.formula(...)) so that function-wrapped terms in
formula strings (e.g. ns(followup, df = 4), I(x^2), factor(grp))
resolve to their underlying variable names rather than being treated
as raw column names.
Usage
formula_vars(x)
Arguments
x |
character vector of RHS formula strings (may contain |
Value
character vector of unique variable names referenced by x.
R Package Documentation
Browse R Packages
We want your feedback!
Note that we can't provide technical support on individual packages. You should contact the package authors for that.
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