R: Calculate Hellinger Distance

CalcHellingerDist {textmineR} | R Documentation

## Calculate Hellinger Distance

### Description

Calculates the Hellinger distances or the rows or columns of a numeric matrix or for two numeric vectors.

### Usage

    CalcHellingerDist(x, y = NULL, by_rows = TRUE)

### Arguments

`x` | A numeric matrix or numeric vector
`y` | A numeric vector. `y` must be specified if `x` is a numeric vector.
`by_rows` | Logical. If `x` is a matrix, should distances be calculated by rows?

### Value

If `x` is a matrix, this returns an square and symmetric matrix. The i,j entries correspond to the Hellinger Distance between the rows of `x` (or the columns of `x` if `by_rows = FALSE`). If `x` and `y` are vectors, this returns a numeric scalar whose value is the Hellinger Distance between `x` and `y`.

### Examples

    x <- rchisq(n = 100, df = 8)
    y <- x^2
    CalcHellingerDist(x = x, y = y)

    mymat <- rbind(x, y)
    CalcHellingerDist(x = mymat)

[Package textmineR version 3.0.5 Index]