+-----------+-------------------+
| ruspini   | R Documentation   |
+-----------+-------------------+

Ruspini Data
------------

Description
~~~~~~~~~~~

The Ruspini data set, consisting of 75 points in four groups that is
popular for illustrating clustering techniques.

Usage
~~~~~

::

    data(ruspini)

Format
~~~~~~

A data frame with 75 observations on 2 variables giving the x and y
coordinates of the points, respectively.

Source
~~~~~~

E. H. Ruspini (1970) Numerical methods for fuzzy clustering. *Inform.
Sci.* **2**, 319â€“350.

References
~~~~~~~~~~

see those in ``agnes``.

Examples
~~~~~~~~

::

    data(ruspini)

    ## Plot similar to Figure 4 in Stryuf et al (1996)
    ## Not run: plot(pam(ruspini, 4), ask = TRUE)


    ## Plot similar to Figure 6 in Stryuf et al (1996)
    plot(fanny(ruspini, 5))

