de.lmu.ifi.dbs.elki.visualization.visualizers.scatterplot.cluster

Class EMClusterVisualization.Instance

java.lang.Object

de.lmu.ifi.dbs.elki.visualization.visualizers.AbstractVisualization

de.lmu.ifi.dbs.elki.visualization.visualizers.scatterplot.AbstractScatterplotVisualization

de.lmu.ifi.dbs.elki.visualization.visualizers.scatterplot.cluster.EMClusterVisualization.Instance

All Implemented Interfaces:

DataStoreListener, ResultListener, VisualizationListener, Visualization, java.util.EventListener

Enclosing class:

EMClusterVisualization

public class EMClusterVisualization.Instance
extends AbstractScatterplotVisualization

Instance.

Author:

Robert Rödler

Field Summary

Fields

Modifier and Type	Field and Description
private int	drawStyle Round or boxed.
static java.lang.String	EMBORDER Generic tags to indicate the type of element.
private static double	KAPPA Kappa constant.
private static double	MKAPPA Minus Kappa constant.
private int	opacStyle Opacity
private int	softBorder Soft or hard border

Fields inherited from class de.lmu.ifi.dbs.elki.visualization.visualizers.scatterplot.AbstractScatterplotVisualization

proj, rel, sample

Fields inherited from class de.lmu.ifi.dbs.elki.visualization.visualizers.AbstractVisualization

context, layer, svgp, task

Constructor Summary

Constructors

Constructor and Description
Instance(VisualizerContext context, VisualizationTask task, VisualizationPlot plot, double width, double height, Projection proj) Constructor

Method Summary

Modifier and Type	Method and Description
private void	drawArc(SVGPath path, double[] cent, double[] pre, double[] nex, double[] oPrev, double[] oNext, double scale) Draw an arc to simulate the hyper ellipse.
protected void	drawHullArc(java.lang.String sname, double[] cent, Polygon chres) Approximate the hull using arcs.
protected void	drawHullLines(java.lang.String sname, double[] cent, Polygon chres) Approximate by convex hull.
protected void	drawSphere2D(java.lang.String sname, double[] cent, double[][] pc) Draw by approximating a sphere via cubic splines
private double[]	equalsPlusTimes(double[] out, double[] x, double[] y, double a) Compute out = x + y * a, for 2d.
void	fullRedraw() Request a full redrawing of the visualization.
protected Polygon	makeHull(double[][] pc) Build a convex hull to approximate the sphere.
protected Polygon	makeHullComplex(double[][] pc) Build a convex hull to approximate the sphere.

Methods inherited from class de.lmu.ifi.dbs.elki.visualization.visualizers.scatterplot.AbstractScatterplotVisualization

setupCanvas, setupCanvas, visualizationChanged

Methods inherited from class de.lmu.ifi.dbs.elki.visualization.visualizers.AbstractVisualization

addListeners, contentChanged, destroy, getHeight, getLayer, getWidth, incrementalRedraw, resultAdded, resultChanged, resultRemoved

Methods inherited from class java.lang.Object

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

Field Detail

EMBORDER

public static final java.lang.String EMBORDER

Generic tags to indicate the type of element. Used in IDs, CSS-Classes etc.

See Also:

Constant Field Values

KAPPA

private static final double KAPPA

Kappa constant.

See Also:

Constant Field Values

MKAPPA

private static final double MKAPPA

Minus Kappa constant.

See Also:

Constant Field Values

opacStyle

private int opacStyle

Opacity

softBorder

private int softBorder

Soft or hard border

drawStyle

private int drawStyle

Round or boxed.

Constructor Detail

Instance

public Instance(VisualizerContext context,
                VisualizationTask task,
                VisualizationPlot plot,
                double width,
                double height,
                Projection proj)

Constructor

Parameters:

context - Visualizer context

task - VisualizationTask

plot - Plot to draw to

width - Embedding width

height - Embedding height

proj - Projection

Method Detail

fullRedraw

public void fullRedraw()

Description copied from interface: Visualization

Request a full redrawing of the visualization.

Specified by:

fullRedraw in interface Visualization

Specified by:

fullRedraw in class AbstractVisualization

drawSphere2D

protected void drawSphere2D(java.lang.String sname,
                            double[] cent,
                            double[][] pc)

Draw by approximating a sphere via cubic splines

Parameters:

sname - CSS class name

cent - center

pc - Principal components

equalsPlusTimes

private double[] equalsPlusTimes(double[] out,
                                 double[] x,
                                 double[] y,
                                 double a)

Compute out = x + y * a, for 2d.

Parameters:

out - Output buffer

x - X

y - Y

a - Scaling

Returns:

out

drawHullLines

protected void drawHullLines(java.lang.String sname,
                             double[] cent,
                             Polygon chres)

Approximate by convex hull.

Parameters:

sname - CSS name

cent - center

chres - Polygon around center

makeHull

protected Polygon makeHull(double[][] pc)

Build a convex hull to approximate the sphere.

Parameters:

pc - Principal components

Returns:

Polygon

makeHullComplex

protected Polygon makeHullComplex(double[][] pc)

Build a convex hull to approximate the sphere.

Parameters:

pc - Principal components

Returns:

Polygon

drawHullArc

protected void drawHullArc(java.lang.String sname,
                           double[] cent,
                           Polygon chres)

Approximate the hull using arcs.

Parameters:

sname - CSS name

cent - Center

chres - Polygon

drawArc

private void drawArc(SVGPath path,
                     double[] cent,
                     double[] pre,
                     double[] nex,
                     double[] oPrev,
                     double[] oNext,
                     double scale)

Draw an arc to simulate the hyper ellipse.

Parameters:

path - Path to draw to

cent - Center

pre - Previous point

nex - Next point

scale - Scaling factor