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Class JSci.awt.Graph2D 

java.lang.Object
   |
   +----java.awt.Component
           |
           +----java.awt.Canvas
                   |
                   +----JSci.awt.DoubleBufferedCanvas
                           |
                           +----JSci.awt.Graph2D
public abstract class Graph2D
extends DoubleBufferedCanvas
implements GraphDataListener
The Graph2D superclass provides an abstract encapsulation of 2D graphs.

Variable Index

o axisPad
Padding.
o maxX
Min and max data points.
o maxY
Min and max data points.
o minX
Min and max data points.
o minY
Min and max data points.
o model
Data model.
o origin
Origin.
o scalePad
Padding.
o xScale
Axis scaling.
o yScale
Axis scaling.

Constructor Index

o Graph2D(Graph2DModel)
Constructs a 2D graph.

Method Index

o dataChanged(GraphDataEvent)
Sent when the contents of the model has changed.
o dataToScreen(float, float)
Converts a data point to screen coordinates.
o drawAxes(Graphics)
Draws the graph axes.
o getModel()
Returns the model used by this graph.
o rescale()
Rescales the Graph2D.
o round(float)
Rounds numbers to so many significant figures.
o setBounds(int, int, int, int)
Reshapes the Graph2D to the specified bounding box.
o setModel(Graph2DModel)
Sets the data plotted by this graph to the specified data.
o setNumbering(boolean)
Turns axis numbering on/off.

Variables

o model 
 protected Graph2DModel model
Data model.

o origin 
 protected Point origin
Origin.

o minX 
 protected float minX
Min and max data points.

o minY 
 protected float minY
Min and max data points.

o maxX 
 protected float maxX
Min and max data points.

o maxY 
 protected float maxY
Min and max data points.

o xScale 
 protected float xScale
Axis scaling.

o yScale 
 protected float yScale
Axis scaling.

o scalePad 
 protected final int scalePad
Padding.

o axisPad 
 protected final int axisPad
Padding.

Constructors

o Graph2D 
 public Graph2D(Graph2DModel gm)
Constructs a 2D graph.

Methods

o setModel 
 public final void setModel(Graph2DModel gm)
Sets the data plotted by this graph to the specified data.

o getModel 
 public final Graph2DModel getModel()
Returns the model used by this graph.

o setNumbering 
 public final void setNumbering(boolean flag)
Turns axis numbering on/off.

o setBounds 
 public final void setBounds(int x,
                             int y,
                             int width,
                             int height)
Reshapes the Graph2D to the specified bounding box.

Overrides:
setBounds in class Component
o rescale 
 protected final void rescale()
Rescales the Graph2D.

o dataToScreen 
 protected final Point dataToScreen(float x,
                                    float y)
Converts a data point to screen coordinates.

o drawAxes 
 protected final void drawAxes(Graphics g)
Draws the graph axes.

o round 
 protected final float round(float x)
Rounds numbers to so many significant figures. 

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