pairwise_count {widyr} | R Documentation |
Count pairs of items within a group
Description
Count the number of times each pair of items appear together within a group defined by "feature." For example, this could count the number of times two words appear within documents).
Usage
pairwise_count(tbl, item, feature, wt = NULL, ...)
pairwise_count_(tbl, item, feature, wt = NULL, ...)
Arguments
tbl |
Table |
item |
Item to count pairs of; will end up in |
feature |
Column within which to count pairs
|
wt |
Optionally a weight column, which should have a consistent weight for each feature |
... |
Extra arguments passed on to |
See Also
Examples
library(dplyr)
dat <- tibble(group = rep(1:5, each = 2),
letter = c("a", "b",
"a", "c",
"a", "c",
"b", "e",
"b", "f"))
# count the number of times two letters appear together
pairwise_count(dat, letter, group)
pairwise_count(dat, letter, group, sort = TRUE)
pairwise_count(dat, letter, group, sort = TRUE, diag = TRUE)
[Package widyr version 0.1.5 Index]