extract_vars: Extract All Symbols from a List of Expressions
In admiraldev: Utility Functions and Development Tools for the Admiral Package Family
View source: R/dev_utilities.R
extract_vars R Documentation
Extract All Symbols from a List of Expressions
Description
Extract All Symbols from a List of Expressions
Usage
extract_vars(x, side = "lhs")
Arguments
x
An R object
- Default value
none
side
One of "lhs" (the default) or "rhs" for formulas
- Default value
"lhs"
Value
A list of expressions
See Also
Developer Utility Functions:
%notin%(),
%or%(),
arg_name(),
contains_vars(),
convert_dtm_to_dtc(),
filter_if(),
friendly_type_of(),
valid_time_units(),
vars2chr()
Examples
library(rlang)
extract_vars(exprs(PARAMCD, (BASE - AVAL) / BASE + 100))
extract_vars(AVAL ~ ARMCD + AGEGR1)
extract_vars(AVAL ~ ARMCD + AGEGR1, side = "rhs")
admiraldev documentation built on June 26, 2025, 1:09 a.m.
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View source: R/dev_utilities.R
| extract_vars | R Documentation |
Extract All Symbols from a List of Expressions
Description
Extract All Symbols from a List of Expressions
Usage
extract_vars(x, side = "lhs")
Arguments
x |
An
|
side |
One of
|
Value
A list of expressions
See Also
Developer Utility Functions:
%notin%(),
%or%(),
arg_name(),
contains_vars(),
convert_dtm_to_dtc(),
filter_if(),
friendly_type_of(),
valid_time_units(),
vars2chr()
Examples
library(rlang)
extract_vars(exprs(PARAMCD, (BASE - AVAL) / BASE + 100))
extract_vars(AVAL ~ ARMCD + AGEGR1)
extract_vars(AVAL ~ ARMCD + AGEGR1, side = "rhs")
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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