Package org.jdesktop.swingx

Class JXGraph.Plot

java.lang.Object
org.jdesktop.beans.AbstractBean
org.jdesktop.swingx.JXGraph.Plot
Enclosing class:
JXGraph
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 implementation 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:

  • Constructor Details

    • Plot

      protected Plot()

      Creates a new, parameter-less plot.

  • Method Details

    • compute

      public abstract double compute(double value)

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

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