duplicate_wide_to_long: Duplicate Values from Wide-Form to Long-Form Data

In rettopnivek/arfpam: Assorted R Functions for Processing, Analysis, and Modeling

Duplicate Values from Wide-Form to Long-Form Data

Description

Function to duplicate values in column x from a wide-form (one row per case) data set wf based on a shared column y with a long-form (multiple rows per case) data set lf.

Usage

duplicate_wide_to_long(wf, lf, x, y, default = NA)

Arguments

wf	A wide-form data frame.
lf	A long-form data frame.
x	The column in wf with values to duplicate (non-standard evaluation possible).
y	The column in both wf and lf over which to repeat values over (non-standard evaluation possible).
default	The value to substitute if no cases for x based on y are found to duplicate.

Value

A vector matching in length to the number of rows of lf with the values of x repeated for each unique case of y.

Examples

# Example wide-form data-frame
wf <- data.frame(
  ID = 1:3,
  Value = 4:6
)

# Example long-form data-frame
lf <- data.frame(
  ID = rep( 1:3, each = 3),
  Value = NA
)

# Duplicate values from 'wf' based
# on shared # column 'ID'
lf$Value <- duplicate_wide_to_long( wf, lf, x = Value, y = ID )
print( lf )

rettopnivek/arfpam documentation built on Oct. 20, 2024, 7:24 p.m.