squarely {widyr}

A special case of the widely adverb for creating tidy square matrices

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)