add_key: Add a key to connect parents to descendants

In cpsievert/XML2R: EasieR XML data collection

Description

This function creates a mapping from parent observations to it's descendants (which useful for merging/joining tables). Either an existing value in the parent observation can be recycled to it's descendants or a new column will be created (if recycle is missing).

Usage

add_key(obs, parent, recycle, key.name, quiet = FALSE)

Arguments

obs	list. Should be the output from listsToObs.
parent	character string. Should be present in the names of obs.
recycle	character string that matches a variable name among parent observations.
key.name	The desired column name of the newly generated key.
quiet	logical. Include message about the keys being generated?

Value

A list of observations.

cpsievert/XML2R documentation built on May 13, 2019, 10:54 p.m.