umx_rename: umx_rename

In umx: Structural Equation Modeling and Twin Modeling in R

umx_rename

Description

Returns a dataframe with variables renamed as desired.

Usage

umx_rename(
  data,
  from = NULL,
  to = NULL,
  regex = NULL,
  test = FALSE,
  old = "deprecated_from",
  replace = "deprecated_to"
)

Arguments

data	The dataframe in which to rename variables
from	List of existing names that will be found and replaced by the contents of replace. (optional: Defaults to NULL).
to	If used alone, a named collection of c(oldName = "newName") pairs. OR, if "from" is a list of existing names, the list of new names) OR, if "regex" is a regular expression, the replace string)
regex	Regular expression with matches will be replaced using replace as the replace string. (Optional: Defaults to NULL).
test	Whether to report a "dry run", not changing anything. (Default = FALSE).
old	deprecated: use from
replace	deprecated: use to

Details

Unlike similar functions in other packages, it checks that the variables exist, and that the new names do not.

Importantly, it also supports regular expressions. This allows you to find and replace text based on patterns and replacements. so to change "replacement" to "in place", ⁠grep=re(place)ment⁠, ⁠replace= in \\1⁠.

note:To use replace list, you must say c(old = "new"), not c(old -> "new")

Value

• dataframe with columns renamed.

See Also

namez to filter (and replace) names, Also umx_check_names to check for existence of names in a dataframe.

Other Data Functions: noNAs(), prolific_anonymize(), prolific_check_ID(), prolific_read_demog(), umxFactor(), umxHetCor(), umx_as_numeric(), umx_cont_2_quantiles(), umx_lower2full(), umx_make_MR_data(), umx_make_TwinData(), umx_make_fake_data(), umx_make_raw_from_cov(), umx_merge_randomized_columns(), umx_polychoric(), umx_polypairwise(), umx_polytriowise(), umx_read_lower(), umx_reorder(), umx_score_scale(), umx_select_valid(), umx_stack(), umx_strings2numeric(), umx

Examples

tmp = mtcars

tmp = umx_rename(tmp, to = c(cyl = "cylinder"))
# let's check cyl has been changed to cylinder...
namez(tmp, "c")

# Alternate style: from->to, first with a test-run
# Dry run
tmp = umx_rename(tmp, from = "disp", to = "displacement", test= TRUE)
# Actually do it
tmp = umx_rename(tmp, from = c("disp"), to = c("displacement"))
umx_check_names("displacement", data = tmp, die = TRUE)
namez(tmp, "disp")

# This will warn that "disp" does not exist (anymore)
new = c("auto", "displacement", "rear_axle_ratio")
tmp = umx_rename(tmp, from = c("am", "disp", "drat"), to = new)
namez(tmp, "a") # still updated am to auto (and rear_axle_ratio)

# Test using regex (in this case to revert "displacement" to "disp")
tmp = umx_rename(tmp, regex = "lacement", to = "", test= TRUE) 
tmp = umx_rename(tmp, regex = "lacement", to = "") # revert to disp
umx_names(tmp, "^d") # all names beginning with a d

# dev: check deprecated format handled...
tmp = umx_rename(tmp, old = c("am", "disp", "drat"), replace = new)

umx documentation built on May 29, 2024, 5:40 a.m.