bookExamples.ch27BusinessGraphics.charts
Class DoubleDataBean

java.lang.Object
  bookExamples.ch27BusinessGraphics.charts.DoubleDataBean

public class DoubleDataBean
extends java.lang.Object

DoubleDataBean is the base class which is required in order to draw any graphs. It contains all the utility methods to calculate the necessary graphics.graph data for drawing. Constants include:

• BIGNUM: an upper bound used in calculating the minimum value in passed data
• LITTLENUM: a lower bound used in calculating the maximum value in passed data
• X_OFFSET: a constant used to correct for the portion of the image frame taken up by the GUI elements
• Y_OFFSET: a constant used to correct for the portion of the image frame taken up by the GUI elements (with offsets set to 0, the axes are drawn off-screen)

Passed parameters set with defaults include:

• width: the width of the drawn image
• height: the height of the drawn image
• xVals: the X data to be graphed; the primary data for the pie graphics.graph
• yVals: the Y data to be graphed; the primary data for the bar graphics.graph
• labels: the labels for the pie graphics.graph data elements
• isGridOn: whether or not a grid should be drawn
• isTicksOn: whether or not ticks should be drawn along the axes
• xLabel: title for the X axis
• yLabel: title for the Y axis
• title: title for the graphics.graph

Since:

JDK 1.3

Author:

Allison McHenry, Douglas Lyon, PhD

Constructor Summary

DoubleDataBean(int w, int h)
Default constructor, used particularly to instantiate an instance of DoubleDataBean by the LineGraph, PieGraph and BarGraph classes

Method Summary

int	getHeight() Gets image height.
java.lang.String	getTitle() Gets title of all graphs.
int	getWidth() Gets image width.
java.lang.String	getXLabel() Gets x-axis label on bar graphs and line graphs.
double[]	getXVals() Gets X data values - the only values which are set for pie graphs.
java.lang.String	getYLabel() Gets y-axis label on bar graphs and line graphs.
double[]	getYVals() Gets Y data values - indicate height of bars for bar graphics.graph.
boolean	isGridOn() Gets whether or not a grid (lines the height and breadth of the image indicating increment size) should be drawn on line graphs and bar graphs.
boolean	isTicksOn() Gets whether ticks (small marks on the x and y axis to indicate increment size) should be drawn on line graphs and bar graphs.
void	setGrid(boolean _isGridOn) Sets whether or not a grid (lines the height and breadth of the image indicating increment size) should be drawn on line graphs and bar graphs.
void	setHeight(int _height) Sets image height.
void	setTicks(boolean _isTicksOn) Sets whether ticks (small marks on the x and y axis to indicate increment size) should be drawn on line graphs and bar graphs.
void	setTitle(java.lang.String _title) Sets title of all graphs.
void	setWidth(int _width) Sets image width.
void	setXLabel(java.lang.String _xLabel) Sets x-axis label on bar graphs and line graphs.
void	setXVals(double[] _xVals)
void	setYLabel(java.lang.String _yLabel) Sets y-axis label on bar graphs and line graphs.
void	setYVals(double[] _yVals) Sets Y data values - indicate height of bars for bar graphics.graph.

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

DoubleDataBean

public DoubleDataBean(int w,
                      int h)

Default constructor, used particularly to instantiate an instance of DoubleDataBean by the LineGraph, PieGraph and BarGraph classes

Method Detail

setWidth

public void setWidth(int _width)

Sets image width.

Parameters:

_width - image width (not frame width)

setHeight

public void setHeight(int _height)

Sets image height.

Parameters:

_height - image height (not frame height)

setXLabel

public void setXLabel(java.lang.String _xLabel)

Sets x-axis label on bar graphs and line graphs.

Parameters:

_xLabel - x-axis label

setYLabel

public void setYLabel(java.lang.String _yLabel)

Sets y-axis label on bar graphs and line graphs.

Parameters:

_yLabel - y-axis label

setTitle

public void setTitle(java.lang.String _title)

Sets title of all graphs.

Parameters:

_title - Graph title

setGrid

public void setGrid(boolean _isGridOn)

Sets whether or not a grid (lines the height and breadth of the image indicating increment size) should be drawn on line graphs and bar graphs.

Parameters:

_isGridOn - whether a grid should be drawn

setTicks

public void setTicks(boolean _isTicksOn)

Sets whether ticks (small marks on the x and y axis to indicate increment size) should be drawn on line graphs and bar graphs.

Parameters:

_isTicksOn - whether ticks should be drawn

setXVals

public void setXVals(double[] _xVals)

Parameters:

_xVals - array of x data values

setYVals

public void setYVals(double[] _yVals)

Sets Y data values - indicate height of bars for bar graphics.graph. Not set for pie.

Parameters:

_yVals - array of y data values

getWidth

public int getWidth()

Gets image width.

Returns:

width image width (not frame width)

getHeight

public int getHeight()

Gets image height.

Returns:

height image height (not frame height)

getXLabel

public java.lang.String getXLabel()

Gets x-axis label on bar graphs and line graphs.

Returns:

xLabel x-axis label

getYLabel

public java.lang.String getYLabel()

Gets y-axis label on bar graphs and line graphs.

Returns:

yLabel y-axis label

getTitle

public java.lang.String getTitle()

Gets title of all graphs.

Returns:

title Graph title

isGridOn

public boolean isGridOn()

Gets whether or not a grid (lines the height and breadth of the image indicating increment size) should be drawn on line graphs and bar graphs.

Returns:

isGridOn whether a grid should be drawn

isTicksOn

public boolean isTicksOn()

Gets whether ticks (small marks on the x and y axis to indicate increment size) should be drawn on line graphs and bar graphs.

Returns:

isTicksOn whether ticks should be drawn

getXVals

public double[] getXVals()

Gets X data values - the only values which are set for pie graphs.

Returns:

xVals array of x data values

getYVals

public double[] getYVals()

Gets Y data values - indicate height of bars for bar graphics.graph. Not set for pie.

Returns:

yVals array of y data values