smile.plot

Class Dendrogram

java.lang.Object

smile.plot.Shape

smile.plot.Plot

smile.plot.Dendrogram

public class Dendrogram
extends Plot

A dendrogram is a tree diagram frequently used to illustrate the arrangement of the clusters produced by hierarchical clustering.

Constructor Summary

Constructors

Constructor and Description
Dendrogram(int[][] merge, double[] height) Constructor.
Dendrogram(int[][] merge, double[] height, java.awt.Color color) Constructor.

Method Summary

Modifier and Type	Method and Description
double	getHeight() Returns the height of tree.
void	paint(Graphics g) Draw the component with given graphics object.
static PlotCanvas	plot(int[][] merge, double[] height) Create a dendrogram plot.
static PlotCanvas	plot(java.lang.String id, int[][] merge, double[] height) Create a dendrogram plot.

Methods inherited from class smile.plot.Plot

getID, getToolBar, getToolTip, setID

Methods inherited from class smile.plot.Shape

getColor, setColor

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

Dendrogram

public Dendrogram(int[][] merge,
                  double[] height)

Constructor.

Parameters:

merge - an n-1 by 2 matrix of which row i describes the merging of clusters at step i of the clustering. If an element j in the row is less than n, then observation j was merged at this stage. If j ≥ n then the merge was with the cluster formed at the (earlier) stage j-n of the algorithm.

height - a set of n-1 non-decreasing real values, which are the clustering height, i.e., the value of the criterion associated with the clustering method for the particular agglomeration.

Dendrogram

public Dendrogram(int[][] merge,
                  double[] height,
                  java.awt.Color color)

Constructor.

Parameters:

merge - an n-1 by 2 matrix of which row i describes the merging of clusters at step i of the clustering. If an element j in the row is less than n, then observation j was merged at this stage. If j ≥ n then the merge was with the cluster formed at the (earlier) stage j-n of the algorithm.

height - a set of n-1 non-decreasing real values, which are the clustering height, i.e., the value of the criterion associated with the clustering method for the particular agglomeration.

color - the color for rendering the plot.

Method Detail

getHeight

public double getHeight()

Returns the height of tree.

paint

public void paint(Graphics g)

Description copied from class: Shape

Draw the component with given graphics object.

Specified by:

paint in class Shape

plot

public static PlotCanvas plot(int[][] merge,
                              double[] height)

Create a dendrogram plot.

Parameters:

merge - an n-1 by 2 matrix of which row i describes the merging of clusters at step i of the clustering. If an element j in the row is less than n, then observation j was merged at this stage. If j ≥ n then the merge was with the cluster formed at the (earlier) stage j-n of the algorithm.

height - a set of n-1 non-decreasing real values, which are the clustering height, i.e., the value of the criterion associated with the clustering method for the particular agglomeration.

plot

public static PlotCanvas plot(java.lang.String id,
                              int[][] merge,
                              double[] height)

Create a dendrogram plot.

Parameters:

id - the id of the plot.

merge - an n-1 by 2 matrix of which row i describes the merging of clusters at step i of the clustering. If an element j in the row is less than n, then observation j was merged at this stage. If j ≥ n then the merge was with the cluster formed at the (earlier) stage j-n of the algorithm.

height - a set of n-1 non-decreasing real values, which are the clustering height, i.e., the value of the criterion associated with the clustering method for the particular agglomeration.