squarely: A special case of the widely adverb for creating tidy square...

In widyr: Widen, Process, then Re-Tidy Data

Description

A special case of widely. Used to pre-prepare and post-tidy functions that take an m x n (m items, n features) matrix and return an m x m (item x item) matrix, such as a distance or correlation matrix.

Usage

squarely(.f, diag = FALSE, upper = TRUE, ...)

squarely_(.f, diag = FALSE, upper = TRUE, ...)

Arguments

.f	Function to wrap
diag	Whether to include diagonal (i = j) in output
upper	Whether to include upper triangle, which may be duplicated
...	Extra arguments passed on to widely

Value

Returns a function that takes at least four arguments:

tbl	A table
item	Name of column to use as rows in wide matrix
feature	Name of column to use as columns in wide matrix
feature	Name of column to use as values in wide matrix
...	Arguments passed on to inner function

See Also

widely, pairwise_count, pairwise_cor, pairwise_dist

Examples

library(dplyr)
library(gapminder)

closest_continent <- gapminder %>%
  group_by(continent) %>%
  squarely(dist)(country, year, lifeExp)

widyr documentation built on April 14, 2020, 6:16 p.m.