R: DS3: Spatial data with arbitrary shapes

DS3 {dbscan} | R Documentation

## DS3: Spatial data with arbitrary shapes

### Description

Contains 8000 2-d points, with 6 "natural" looking shapes, all of which have an sinusoid-like shape that intersects with each cluster.

### Usage

    data("DS3")

### Format

A data frame with 8000 observations on the following 2 variables.

`X`

  a numeric vector

`Y`

  a numeric vector

### Details

Originally used as a benchmark data set for the Chameleon clustering algorithm[1] to illustrate the a data set containing arbitrarily shaped spatial data surrounded by both noise and artifacts.

### Source

Obtained at https://cs.joensuu.fi/sipu/datasets/

### References

Karypis, George, Eui-Hong Han, and Vipin Kumar (1999). "Chameleon: Hierarchical clustering using dynamic modeling." Computer 32(8): 68-75.

### Examples

    data(DS3)
    plot(DS3, pch=20, cex=0.25)

[Package dbscan version 1.1-6 Index]