# DS3

From dbscan v1.1-1
by Michael Hahsler

##### DS3: Spatial data with arbitrary shapes

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

- Keywords
- datasets

##### Usage

`data("DS3")`

##### 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.

##### Format

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

`X`

a numeric vector

`Y`

a numeric vector

##### References

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

##### Examples

```
# NOT RUN {
data(DS3)
plot(DS3, pch=20, cex=0.25)
# }
```

*Documentation reproduced from package dbscan, version 1.1-1, License: GPL (>= 2)*

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