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.
The data set was originally used as a benchmark data set for the Chameleon clustering
algorithm (Karypis, Han and Kumar, 1999) to
illustrate the a data set containing arbitrarily shaped
spatial data surrounded by both noise and artifacts.

### Format

A data.frame with 8000 observations on the following 2 columns:

- X
a numeric vector

- Y
a numeric vector

### Source

Obtained from http://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 1.1-11

Index]