Scientific Computing with Scala

Andrews curve

Let's start with something easy. We will see how to use Andrews curve to visualize our Iris data. Andrews curve is a very simple visualization method yet it is sometimes an effective way to spot clusters in multi-dimensional data.

The way it works is really simple. Each row is plotted as a separate curve. Suppose we have a row , where is the value of the i^th attribute for that row. Then, the curve corresponding to this row is given here:

, where .

Therefore, each row defines a finite Fourier series. This curve is then plotted. We will ...