auc_diff: Difference in the area-under-the-curve of two vectors

In brainGraph: Graph Theory Analysis of Brain MRI Data

Description

This function takes two vectors, calculates the area-under-the-curve (AUC), and calculates the difference between the two (if applicable).

Usage

auc_diff(x, y)

Arguments

x	Numeric vector of the x-values
y	A numeric vector or matrix

Details

There are 4 different behaviors for this function:

1. If x is a single numeric value, then y should be a vector of 2 values and the difference is returned. This generally should not occur and may be removed in the future.

2. If y has 1 column (or is a vector), then the AUC of y is returned.

3. If y has exactly 2 columns, then each column should contain the values of interest for each subject group, and the difference in AUC's for each group is returned.

4. If y has multiple columns (e.g., equal to the number of vertices of a graph), it will calculate the AUC for each column.

Value

A numeric value of the difference between two groups, or a numeric vector of the AUC across vertices

brainGraph documentation built on Oct. 23, 2020, 6:37 p.m.