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

Class OPTICSPlot<D extends Distance<D>>

java.lang.Object

de.lmu.ifi.dbs.elki.visualization.opticsplot.OPTICSPlot<D>

Type Parameters:

D - Distance type

All Implemented Interfaces:

Result

public class OPTICSPlot<D extends Distance<D>>
extends Object
implements Result

Class to produce an OPTICS plot image.

Field Summary

Fields

Modifier and Type	Field and Description
(package private) ClusterOrderResult<D>	co The result to plot
(package private) OPTICSColorAdapter	colors Color adapter to use
(package private) OPTICSDistanceAdapter<D>	distanceAdapter The mapping from cluster order entry to value
(package private) int	height Height of plot
private static String	IMGFILEPREFIX Prefix for filenames
protected static Logging	logger Logger
protected RenderedImage	plot The Optics plot.
(package private) LinearScale	scale Scale to use
protected File	tempFile The plot saved to a temp file.
(package private) int	width Width of plot

Constructor Summary

Constructors

Constructor and Description
OPTICSPlot(ClusterOrderResult<D> co, OPTICSColorAdapter colors) Constructor, with automatic distance adapter detection.
OPTICSPlot(ClusterOrderResult<D> co, OPTICSColorAdapter colors, OPTICSDistanceAdapter<D> distanceAdapter) Constructor.

Method Summary

Methods

Modifier and Type	Method and Description
static <D extends Distance<D>> boolean	canPlot(ClusterOrderResult<D> co) Test whether this class can produce an OPTICS plot for the given cluster order.
protected LinearScale	computeScale(List<ClusterOrderEntry<D>> order) Compute the scale (value range)
void	forgetRenderedImage() Free memory used by rendered image.
private static <D extends Distance<D>> OPTICSDistanceAdapter<D>	getAdapterForDistance(ClusterOrderResult<D> co) Try to find a distance adapter.
File	getAsTempFile() Get a temporary file for the optics plot.
ClusterOrderResult<D>	getClusterOrder() Get the cluster order we are attached to.
OPTICSDistanceAdapter<D>	getDistanceAdapter() Get the distance adapter-
int	getHeight()
String	getLongName() A "pretty" name for the result, for use in titles, captions and menus.
RenderedImage	getPlot() Get the OPTICS plot.
double	getRatio() Get width-to-height ratio of image.
LinearScale	getScale()
String	getShortName() A short name for the result, useful for file names.
int	getWidth()
static <D extends Distance<D>> OPTICSPlot<D>	plotForClusterOrder(ClusterOrderResult<D> 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

Methods inherited from class java.lang.Object

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

Field Detail

logger

protected static final Logging logger

Logger

IMGFILEPREFIX

private static final String IMGFILEPREFIX

Prefix for filenames

See Also:

Constant Field Values

scale

LinearScale scale

Scale to use

width

int width

Width of plot

height

int height

Height of plot

co

final ClusterOrderResult<D extends Distance<D>> co

The result to plot

colors

final OPTICSColorAdapter colors

Color adapter to use

distanceAdapter

final OPTICSDistanceAdapter<D extends Distance<D>> distanceAdapter

The mapping from cluster order entry to value

plot

protected RenderedImage plot

The Optics plot.

tempFile

protected File tempFile

The plot saved to a temp file.

Constructor Detail

OPTICSPlot

public OPTICSPlot(ClusterOrderResult<D> co,
          OPTICSColorAdapter colors,
          OPTICSDistanceAdapter<D> distanceAdapter)

Constructor.

Parameters:

co - Cluster order to plot.

colors - Coloring strategy

distanceAdapter - Distance adapter

OPTICSPlot

public OPTICSPlot(ClusterOrderResult<D> co,
          OPTICSColorAdapter colors)

Constructor, with automatic distance adapter detection.

Parameters:

co - Cluster order to plot.

colors - Coloring strategy

Method Detail

getAdapterForDistance

private static <D extends Distance<D>> OPTICSDistanceAdapter<D> getAdapterForDistance(ClusterOrderResult<D> co)

Try to find a distance adapter.

Type Parameters:

D - distance type

Parameters:

co - ClusterOrderResult

Returns:

distance adapter

canPlot

public static <D extends Distance<D>> boolean canPlot(ClusterOrderResult<D> co)

Test whether this class can produce an OPTICS plot for the given cluster order.

Type Parameters:

D - Distance type

Parameters:

co - Cluster order result

Returns:

test result

replot

public void replot()

Trigger a redraw of the OPTICS plot

computeScale

protected LinearScale computeScale(List<ClusterOrderEntry<D>> 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 RenderedImage getPlot()

Get the OPTICS plot.

Returns:

plot image

getDistanceAdapter

public OPTICSDistanceAdapter<D> getDistanceAdapter()

Get the distance adapter-

Returns:

the distanceAdapter

getAsTempFile

public File getAsTempFile()
                   throws IOException

Get a temporary file for the optics plot.

Returns:

Temp file containing the plot

Throws:

IOException

forgetRenderedImage

public void forgetRenderedImage()

Free memory used by rendered image.

getLongName

public 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 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 <D extends Distance<D>> OPTICSPlot<D> plotForClusterOrder(ClusterOrderResult<D> co,
                                                        VisualizerContext context)

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

Type Parameters:

D - Distance type

Parameters:

co - Cluster order

context - Context (for colors and reference clustering)

Returns:

New or existing optics plot

getClusterOrder

public ClusterOrderResult<D> getClusterOrder()

Get the cluster order we are attached to.

Returns:

Cluster order