ruzicka {abdiv} | R Documentation |

## Ruzicka or weighted Jaccard distance

### Description

Ruzicka or weighted Jaccard distance

### Usage

ruzicka(x, y)

### Arguments

### Details

For vectors `x`

and `y`

, the Ruzicka distance is defined as

*d(x, y) = 1 - \frac{∑_i \min(x, y)}{∑_i \max(x, y)}.*

Relation
to other definitions:

Equivalent to vegdist() with method = "jaccard".

Related to the Bray-Curtis distance,
*d_r = 2 d_{bc} / (1 + d_{bc})*.

### Value

The Ruzicka distance between `x`

and `y`

. The distance is
not defined if all elements in `x`

and `y`

are zero, and we
return `NaN`

in this case.

[Package

*abdiv* version 0.2.0

Index]