Class Graph

java.lang.Object
   |
   +----java.awt.Component
           |
           +----java.awt.Canvas
                   |
                   +----Graph

public class Graph

extends Canvas

graphHeight

graphWidth

Graph()

The constructor method creates storage for data for each of the curves, initializes some variables, and resizes the graph.

backgroundPaint(Graphics)

This method is actually in charge of calling each of the drawing methods.

clearGraphData()

This method deletes the old graph data

drawPoint(Graphics, int, int)

This method draws a small diamond at the specified point

drawTicks(Graphics, Vector, String)

This method draws the y-axis tick marks and labelling them

getImage()

This method returns the offscreen image for creating the GIF file.

paint(Graphics)

This method attempts to create an off screen image and then calls the background paint method.

setGraphData(Vector, Vector)

This method assigns new data to the curve vectors

setLineStyle(String)

This method is used to update the line style selected by the user.

updateScale(String)

This method is called by external classes to update the scale selection.

updateUserScale(String, double)

This method allows external classes to update the manual scale mechanisms.

  public final int graphWidth

  public final int graphHeight

  public Graph()

The constructor method creates storage for data for each of the curves, initializes some variables, and resizes the graph.

  public void updateScale(String s)

This method is called by external classes to update the scale selection.

Parameters:

s - string parameter containing either RED, BLUE, or INDEPENDENT

See Also:

lilgpMonitor

  public void updateUserScale(String which,
                              double s)

This method allows external classes to update the manual scale mechanisms.

Parameters:

which - is used to determine which scale to adjust either RED or BLUE

s - is the scale value

See Also:

lilgpMonitor

  public void clearGraphData()

This method deletes the old graph data

  public void setGraphData(Vector metricOne,
                           Vector metricTwo)

This method assigns new data to the curve vectors

Parameters:

metricOne - specifies the data for the red curve

metricTwo - specifies the data for the blue curve

  public void setLineStyle(String style)

This method is used to update the line style selected by the user.

Parameters:

style - specifes the line style, either LINES or LINESPOINTS

  public void drawTicks(Graphics g,
                        Vector theData,
                        String anchor)

This method draws the y-axis tick marks and labelling them

Parameters:

g - the graphics context

theData - current curve data

anchor - specifies which axis to draw the ticks on, either EAST or WEST

  public void drawPoint(Graphics g,
                        int x,
                        int y)

This method draws a small diamond at the specified point

Parameters:

g - the graphics context

x - the x coordinate of the data point

y - the y coordinate of the data point

  public void backgroundPaint(Graphics g)

This method is actually in charge of calling each of the drawing methods.

Parameters:

g - the graphics context

  public void paint(Graphics g)

This method attempts to create an off screen image and then calls the background paint method. If it fails, then it simply paints on the visible graphics context.

Parameters:

g - the graphics context

Overrides:

paint in class Canvas

  public Image getImage()

This method returns the offscreen image for creating the GIF file.