de.lmu.ifi.dbs.elki.visualization.opticsplot

Class OPTICSPlot

java.lang.Object

de.lmu.ifi.dbs.elki.visualization.opticsplot.OPTICSPlot

All Implemented Interfaces:

Result

public class OPTICSPlot
extends java.lang.Object
implements Result

Class to produce an OPTICS plot image.

Since:

0.3

Author:

Erich Schubert

Field Summary

Fields

Modifier and Type	Field and Description
(package private) ClusterOrder	co The result to plot.
(package private) StylingPolicy	colors Color adapter to use
(package private) int	height Height of plot
private static Logging	LOG Logger
private static int	MAX_HEIGHT Minimum and maximum vertical resolution.
private static int	MIN_HEIGHT Minimum and maximum vertical resolution.
protected java.awt.image.RenderedImage	plot The Optics plot.
protected int	plotnum The plot number for Batik
(package private) double	ratio Ratio of plot
(package private) LinearScale	scale Scale to use
(package private) int	width Width of plot

Constructor Summary

Constructors

Constructor and Description
OPTICSPlot(ClusterOrder co, StylingPolicy colors) Constructor, with automatic distance adapter detection.

Method Summary

Modifier and Type	Method and Description
protected LinearScale	computeScale(ClusterOrder order) Compute the scale (value range)
void	forgetRenderedImage() Free memory used by rendered image.
ClusterOrder	getClusterOrder() Get the cluster order we are attached to.
int	getHeight()
java.lang.String	getLongName() A "pretty" name for the result, for use in titles, captions and menus.
java.awt.image.RenderedImage	getPlot() Get the OPTICS plot.
double	getRatio() Get width-to-height ratio of image.
LinearScale	getScale()
java.lang.String	getShortName() A short name for the result, useful for file names.
java.lang.String	getSVGPlotURI() Get the SVG registered plot number
int	getWidth()
static OPTICSPlot	plotForClusterOrder(ClusterOrder co, VisualizerContext context) Static method to find an optics plot for a result, or to create a new one using the given context.
void	replot() Trigger a redraw of the OPTICS plot
double	scaleFromPixel(double y) Scale a pixel value to a reachability
int	scaleToPixel(double reach) Scale a reachability distance to a pixel value.

Methods inherited from class java.lang.Object

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

Field Detail

LOG

private static final Logging LOG

Logger

MIN_HEIGHT

private static final int MIN_HEIGHT

Minimum and maximum vertical resolution.

See Also:

Constant Field Values

MAX_HEIGHT

private static final int MAX_HEIGHT

Minimum and maximum vertical resolution.

See Also:

Constant Field Values

scale

LinearScale scale

Scale to use

width

int width

Width of plot

height

int height

Height of plot

ratio

double ratio

Ratio of plot

co

final ClusterOrder co

The result to plot.

colors

final StylingPolicy colors

Color adapter to use

plot

protected java.awt.image.RenderedImage plot

The Optics plot.

plotnum

protected int plotnum

The plot number for Batik

Constructor Detail

OPTICSPlot

public OPTICSPlot(ClusterOrder co,
                  StylingPolicy colors)

Constructor, with automatic distance adapter detection.

Parameters:

co - Cluster order to plot.

colors - Coloring strategy

Method Detail

replot

public void replot()

Trigger a redraw of the OPTICS plot

scaleToPixel

public int scaleToPixel(double reach)

Scale a reachability distance to a pixel value.

Parameters:

reach - Reachability

Returns:

Pixel value.

scaleFromPixel

public double scaleFromPixel(double y)

Scale a pixel value to a reachability

Parameters:

y - Pixel value

Returns:

Reachability

computeScale

protected LinearScale computeScale(ClusterOrder order)

Compute the scale (value range)

Parameters:

order - Cluster order to process

Returns:

Scale for value range of cluster order

getScale

public LinearScale getScale()

Returns:

the scale

getWidth

public int getWidth()

Returns:

the width

getHeight

public int getHeight()

Returns:

the height

getRatio

public double getRatio()

Get width-to-height ratio of image.

Returns:

width / height

getPlot

public java.awt.image.RenderedImage getPlot()

Get the OPTICS plot.

Returns:

plot image

forgetRenderedImage

public void forgetRenderedImage()

Free memory used by rendered image.

getSVGPlotURI

public java.lang.String getSVGPlotURI()

Get the SVG registered plot number

Returns:

Plot URI

getLongName

public java.lang.String getLongName()

Description copied from interface: Result

A "pretty" name for the result, for use in titles, captions and menus.

Specified by:

getLongName in interface Result

Returns:

result name

getShortName

public java.lang.String getShortName()

Description copied from interface: Result

A short name for the result, useful for file names.

Specified by:

getShortName in interface Result

Returns:

result name

plotForClusterOrder

public static OPTICSPlot plotForClusterOrder(ClusterOrder co,
                                             VisualizerContext context)

Static method to find an optics plot for a result, or to create a new one using the given context.

Parameters:

co - Cluster order

context - Context (for colors and reference clustering)

Returns:

New or existing optics plot

getClusterOrder

public ClusterOrder getClusterOrder()

Get the cluster order we are attached to.

Returns:

Cluster order