i_recode: i_recode Function for recoding new variable from origin...

In ilabelled: Simple Handling of Labelled Data

i_recode Function for recoding new variable from origin variable(s).

Description

Returns a vector object of class i_labelled

Usage

i_recode(
  x,
  ...,
  label = NULL,
  na_values = NULL,
  na_range = NULL,
  scale = NULL,
  annotation = NULL,
  wording = NULL,
  subject = NULL,
  copy = NULL,
  keep_labels = FALSE
)

Arguments

x	vector or data.frame
...	formula for recoding of values. See examples.
label	variable label
na_values	a vector with missing values
na_range	a vector for missing range
scale	scale level (nominal, ordinal, metric)
annotation	addition information about variable
wording	question text
subject	subject
copy	When applied to vector: T/F. When applied to a data.frame: a variable from x. Copy the values of an existing variable or x before recoding values according to ...
keep_labels	keep value labels from origin vector when copy TRUE or variable from x

Details

Can be applied to either vector or data.frame. When x is data.frame the formula passed to ... is different from when it is applied to single vector. When function is applied to a data.frame, multiple conditions on multiple variables are possible (e.g when variable X is equal to this, do that; when variable Y is not equal to this, do that, etc.). See examples for further clarification.

You can recode directly via value labels by using

Value

Returns i_labelled vector with values defined by formula and information given to function.

Examples

# When applied to a single vector:
# keep in mind that when function is applied to vector, instead of a column use x
myVector <- i_labelled(1:4, labels = c("A" = 1, "B" = 2, "C" = 3, "D" = 4))
i_recode(x = myVector, "AB" = 1 ~ x %in% c("A", "B"), "CD" = 2 ~ x == c(3, 4))

# When applied to data.frame (multiple conditions)
myData <- data.frame(
   V1 = i_labelled(1:3, labels = c("A" = 1, "B" = 2, "C" = 3)),
   V2 = i_labelled(c(2:3,-9))
)
i_recode(x = myData, A = 1 ~ V1 %in% c("A", "B"), 2 ~ "V2" == 3, "C" = 999 ~ V2 == -9)

ilabelled documentation built on April 3, 2025, 10:38 p.m.