Class JXGraph.Plot

  extended by org.jdesktop.beans.AbstractBean
      extended by org.jdesktop.swingx.JXGraph.Plot
Enclosing class:

public abstract static class JXGraph.Plot
extends AbstractBean

A plot represents a mathematical transformation used by JXGraph. When a plot belongs to a graph, the graph component asks for the transformation of a value along the X axis. The resulting value defines the Y coordinates at which the graph must draw a spot of color.

Here is a sample implemention of this class that draws a straight line once added to a graph (it follows the well-known equation y=a.x+b):

 class LinePlot extends JXGraph.Plot {
     public double compute(double value) {
         return 2.0 * value + 1.0;

When a plot is added to an instance of JXGraph, the JXGraph automatically becomes a new property change listener of the plot. If property change events are fired, the graph will be updated accordingly.

More information about plots usage can be found in JXGraph in the section entitled Plots.

See Also:
JXGraph, JXGraph.addPlots(Color, JXGraph.Plot...)

Constructor Summary
protected JXGraph.Plot()
          Creates a new, parameter-less plot.
Method Summary
abstract  double compute(double value)
          This method must return the result of a mathematical transformation of its sole parameter.
Methods inherited from class org.jdesktop.beans.AbstractBean
addPropertyChangeListener, addPropertyChangeListener, addVetoableChangeListener, addVetoableChangeListener, clone, fireIndexedPropertyChange, firePropertyChange, firePropertyChange, fireVetoableChange, fireVetoableChange, getPropertyChangeListeners, getPropertyChangeListeners, getVetoableChangeListeners, getVetoableChangeListeners, hasPropertyChangeListeners, hasVetoableChangeListeners, removePropertyChangeListener, removePropertyChangeListener, removeVetoableChangeListener, removeVetoableChangeListener
Methods inherited from class java.lang.Object
equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail


protected JXGraph.Plot()

Creates a new, parameter-less plot.

Method Detail


public abstract double compute(double value)

This method must return the result of a mathematical transformation of its sole parameter.

value - a value along the X axis of the graph currently drawing this plot
the result of the mathematical transformation of value