Polychoric correlation

Calculates Polychoric correlation using for every factor variable pair in a dataset.

Usage

pair_polychor(d, handle.na = TRUE, warnings = TRUE, ...)

Arguments

d

A dataframe

handle.na

ignored. Pairwise complete observations are used automatically.

warnings

If TRUE, generates a warning for datasets of one row, one column, or with constant variables.

...

other arguments

Value

A tibble of class pairwise with polychoric correlation for factor pairs, or NULL if there are not at least two factor variables

Details

The polychoric correlation is calculated using the polychor function from the polycor package, and assumes factor levels are in the given order. NAs are automatically handled by pairwise omit.

Examples

pair_polychor(iris)
#> Warning: Data has just one column.