
Converts values to a new value based on their label and value in a
labelled
vector. If the newly assigned value does
not match an already existing labelled value, the smallest value's label
is used. Ignores any value that does not have a label.
lbl_collapse(x, .fun)
A labelled
vector
A function that takes .val and .lbl (the values and
labels) and returns the values of the label you want to change it to.
It is passed to a function similar to as_function
, so
also accepts quosure-style lambda functions (that use values .val and .lbl).
See examples for more information.
A haven::labelled vector
Other lbl_helpers:
lbl_add()
,
lbl_clean()
,
lbl_define()
,
lbl_na_if()
,
lbl_relabel()
,
lbl()
,
zap_ipums_attributes()
# NOT RUN {
x <- haven::labelled(
c(10, 10, 11, 20, 30, 99, 30, 10),
c(Yes = 10, `Yes - Logically Assigned` = 11, No = 20, Maybe = 30, NIU = 99)
)
lbl_collapse(x, ~(.val %/% 10) * 10)
# Notice that 90 get's NIU from 99 even though 90 didn't have a label in original
lbl_collapse(x, ~ifelse(.val == 10, 11, .val))
# But here 10 is assigned 11's label
# You can also use the more explicit function notation
lbl_collapse(x, function(.val, .lbl) (.val %/% 10) * 10)
# Or even the name of a function
collapse_function <- function(.val, .lbl) (.val %/% 10) * 10
lbl_collapse(x, "collapse_function")
# }
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