getSetIntersections: Calculate sizes of intersections between sets

In natbprice/radsets: Create Radial Set Diagrams for Visualizing Overlapping Sets

Description

Calculate sizes of unions and intersections between each pair of sets

Usage

getSetIntersections(df, setNames, idName)

Arguments

df	A data frame indicating set membership
setNames	A character vector of set names
idName	A string specifying name of ID variable for each item

Details

The input data frame should contain a row for each item and a binary variable for each set indicating the membership of each item. The setNames input should correspond to the binary indicator columns in the data frame.

Value

A data frame with variables:

• set1 and set2 pair of sets

• Ninter and Nunion number of elements in the intersection and union of the pair of sets

• N1 and N2 number of items in each set

• prop1 and prop2 proportion of items in each set that are also members of the other set (prop1 = Ninter / N1)

• prop proportion of items from either set that are members of both sets (prop = Ninter / Nunion)

• .pred predictions assuming marginal independence of sets

• .error difference between predictions and observations

• .relError error relative to observations

Examples

# Define set names
data("movieSets")
setNames <- colnames(movieSets[,-c(1:8)])

# Calculate set sizes
getSetIntersections(movieSets, setNames, "movieId")

natbprice/radsets documentation built on Feb. 29, 2020, 5:21 p.m.