labels: Dataframe labels

In mark: Miscellaneous, Analytic R Kernels

Dataframe labels

Description

Assign labels to a vector or data.frame.

Usage

assign_labels(x, ...)

## Default S3 method:
assign_labels(x, label, ...)

## S3 method for class 'data.frame'
assign_labels(
  x,
  ...,
  .missing = c("error", "warn", "skip"),
  .ls = rlang::list2(...)
)

get_labels(x)

## Default S3 method:
get_labels(x)

## S3 method for class 'data.frame'
get_labels(x)

view_labels(x, title)

remove_labels(x, ...)

## Default S3 method:
remove_labels(x, ...)

## S3 method for class 'data.frame'
remove_labels(x, cols, ...)

Arguments

x	A vector of data.frame
...	One or more unquoted expressed separated by commas. If assigning to a data.frame, ... can be replaced with a data.frame where the first column is the targeted colname and the second is the desired label.
label	A single length string of a label to be assigned
.missing	A control setting for dealing missing columns in a list; can be set to error to stop() the call, warn to provide a warning, or skip to silently skip those labels.
.ls	A named list of columns and labels to be set if ... is empty
title	Title for the viewer window – if not supplemented will show as paste0(as.character(substitute(x)), " - Labels")
cols	A character vector of column names; if missing will remove the label attribute across all columns

Details

When labels are assigned to a data.frame they can make viewing the object (with View() inside Rstudio). The view_labels() has a call to View() inside and will retrieve the labels and show them in the viewer as a data.frame.

Value

A labelled vector or data.frame

Examples

labs <- assign_labels(
  iris,
  Sepal.Length = "cms",
  Sepal.Width  = "cms",
  Petal.Length = "cms",
  Petal.Width  = "cms",
  Species      = "Iris ..."
)

labs$dummy <- ""
get_labels(labs) # shows label as <NA> for dummy column

labs0 <- remove_labels(labs, c("Sepal.Length", "Sepal.Width"))
get_labels(labs0) # No labels for Sepal.Length and Sepal.Width

mark documentation built on Oct. 23, 2023, 9:06 a.m.