java.lang.Object
- elki.visualization.opticsplot.OPTICSPlot

```
public class OPTICSPlot
extends java.lang.Object
```
Class to produce an OPTICS plot image.

Since:

0.3

Author:

Erich Schubert

Field Summary

Fields
Modifier and Type	Field	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 Description

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

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method	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()`
`java.awt.image.RenderedImage`	`getPlot()`	Get the OPTICS plot.
`double`	`getRatio()`	Get width-to-height ratio of image.
`LinearScale`	`getScale()`
`java.lang.String`	`getShortName()`
`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()
```
  - getShortName
```
public java.lang.String getShortName()
```
  - 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

Class OPTICSPlot

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

LOG

MIN_HEIGHT

MAX_HEIGHT

scale

width

height

ratio

co

colors

plot

plotnum

Constructor Detail

OPTICSPlot

Method Detail

replot

scaleToPixel

scaleFromPixel

computeScale

getScale

getWidth

getHeight

getRatio

getPlot

forgetRenderedImage

getSVGPlotURI

getLongName

getShortName

plotForClusterOrder

getClusterOrder