lightgraph

Class Graph

java.lang.Object

lightgraph.Graph

Direct Known Subclasses:

ForgetfulGraph

public class Graph
extends Object

A lightweight graphing application with options for formating a graph.

Author:

mbs207

Field Summary

Fields

Modifier and Type	Field and Description
boolean	AUTOX
boolean	AUTOY
int	CHEIGHT canvas height and width
int	CWIDTH
ArrayList<DataSet>	DATASETS
double	MAXX
double	MAXY
double	MINX
double	MINY
GraphPanel	panel

Constructor Summary

Constructors

Constructor and Description
Graph()
Graph(double[] x, double[] y)

Method Summary

Modifier and Type	Method and Description
DataSet	addData(double[] x, double[] y) Creates a new DataSite, with color, line and point information that will be drawn.
void	appendPoint(int set, double x, double y) Append a data point to an existing data set.
void	autoScale() Goes through all of the current data and find the min/max for scaling the image.
void	autoScaleX() Sets the autoscale in the x directions.
void	autoScaleY() Sets the autoscale for the y-axis
void	clearData()
void	createTics() Creates the strings for the width, and calculates their dimensions so that the graph can be appropriately scaled.
int	dataSetCount()
void	drawBorder(GraphPainter p, AffineTransform transform)
void	drawSet(DataSet set, GraphPainter painter, AffineTransform transform)
void	drawXTics(GraphPainter p, AffineTransform t) Takes the full x range and breaks it into 7 tics, uses the transform to place points.
void	drawYTics(GraphPainter p, AffineTransform t) Takes the full y range and breaks it into 5 tics, uses the transform to place points.
Color	getBackground()
double[]	getDataCoordinates(double panel_x, double panel_y) Based on the coordinates of the panel, gets the coordinates in data space.
DataSet	getDataSet(int i) Gets the data set at the corresponding index i.
GraphPanel	getGraphPanel()
double[]	getImageCoordinates(double real_x, double real_y) Takes a coordinate in the data/real space and returns a coodinate in image space.
double	getKeyX()
double	getKeyY()
String	getTitle()
String	getXLabel()
int	getXTicCount()
String	getYLabel()
int	getYTicCount()
void	refresh(boolean rescale) This does all of the reset/repaint functions.
void	repaint()
DataSet	replaceData(int set, double[] x, double[] y) replaces the data set with a new data set consisting of the xy pairs.
void	resetGraph() Resets the graph and paints it onto a buffered image
void	resetGraph(GraphPainter p)
void	resizeGraph(int x, int y)
void	savePng(File f)
void	saveSvg(File f)
void	setAxisColor(Color c)
void	setBackground(Color c)
void	setContentSize(int width, int height)
void	setKeyX(double x) Sets the distance from the right edge of the graph for the top left cornder of the key.
void	setKeyY(double y) Sets the distance from the top of the graph to the top of the key.
void	setLabelFont(LGFont labelFont)
void	setTicFont(LGFont ticFont)
void	setTitle(String label)
void	setTitleFont(LGFont font)
void	setXLabel(String label)
void	setXRange(double min, double max) Set the xrange values the minimum must be less than the maximum.
void	setXTicCount(int c)
void	setYLabel(String label)
void	setYRange(double min, double max) Set the xrange values the minimum must be less than the maximum.
void	setYTicCount(int c)
void	show() Shows the graph in its own JFrame
void	show(boolean exit_on_close)
void	show(boolean exit_on_close, String window_title)

Methods inherited from class java.lang.Object

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

Field Detail

AUTOX

public boolean AUTOX

AUTOY

public boolean AUTOY

MINX

public double MINX

MINY

public double MINY

MAXX

public double MAXX

MAXY

public double MAXY

CHEIGHT

public int CHEIGHT

canvas height and width

CWIDTH

public int CWIDTH

DATASETS

public ArrayList<DataSet> DATASETS

panel

public GraphPanel panel

Constructor Detail

Graph

public Graph()

Graph

public Graph(double[] x,
             double[] y)

Method Detail

addData

public DataSet addData(double[] x,
                       double[] y)

Creates a new DataSite, with color, line and point information that will be drawn.

Parameters:

x - array of x values

y - array of y values

Returns:

the dataset created

replaceData

public DataSet replaceData(int set,
                           double[] x,
                           double[] y)

replaces the data set with a new data set consisting of the xy pairs.

Parameters:

set -

x -

y -

Returns:

resizeGraph

public void resizeGraph(int x,
                        int y)

resetGraph

public void resetGraph()

Resets the graph and paints it onto a buffered image

resetGraph

public void resetGraph(GraphPainter p)

drawYTics

public void drawYTics(GraphPainter p,
                      AffineTransform t)

Takes the full y range and breaks it into 5 tics, uses the transform to place points.

Parameters:

p -

t -

drawXTics

public void drawXTics(GraphPainter p,
                      AffineTransform t)

Takes the full x range and breaks it into 7 tics, uses the transform to place points.

Parameters:

p -

t -

clearData

public void clearData()

drawSet

public void drawSet(DataSet set,
                    GraphPainter painter,
                    AffineTransform transform)

setXLabel

public void setXLabel(String label)

setYLabel

public void setYLabel(String label)

setTitle

public void setTitle(String label)

drawBorder

public void drawBorder(GraphPainter p,
                       AffineTransform transform)

savePng

public void savePng(File f)
             throws IOException

Throws:

IOException

saveSvg

public void saveSvg(File f)

createTics

public void createTics()

Creates the strings for the width, and calculates their dimensions so that the graph can be appropriately scaled.

autoScaleX

public void autoScaleX()

Sets the autoscale in the x directions.

autoScaleY

public void autoScaleY()

Sets the autoscale for the y-axis

autoScale

public void autoScale()

Goes through all of the current data and find the min/max for scaling the image.

setXRange

public void setXRange(double min,
                      double max)
               throws IllegalArgumentException

Set the xrange values the minimum must be less than the maximum.

Parameters:

min - min x value

max - max y value

Throws:

IllegalArgumentException

setYRange

public void setYRange(double min,
                      double max)
               throws IllegalArgumentException

Set the xrange values the minimum must be less than the maximum.

Parameters:

min - min x value

max - max y value

Throws:

IllegalArgumentException

getDataSet

public DataSet getDataSet(int i)

Gets the data set at the corresponding index i.

Parameters:

i - index of selected dataset

Returns:

the line corresponding.

dataSetCount

public int dataSetCount()

appendPoint

public void appendPoint(int set,
                        double x,
                        double y)

Append a data point to an existing data set.

Parameters:

set -

x -

y -

setContentSize

public void setContentSize(int width,
                           int height)

show

public void show()

Shows the graph in its own JFrame

show

public void show(boolean exit_on_close,
                 String window_title)

show

public void show(boolean exit_on_close)

repaint

public void repaint()

refresh

public void refresh(boolean rescale)

This does all of the reset/repaint functions. Additionaly it will request a rescale.

Parameters:

rescale - if the auto scale is performed.

setYTicCount

public void setYTicCount(int c)

setXTicCount

public void setXTicCount(int c)

getXTicCount

public int getXTicCount()

getYTicCount

public int getYTicCount()

setBackground

public void setBackground(Color c)

setAxisColor

public void setAxisColor(Color c)

getBackground

public Color getBackground()

getXLabel

public String getXLabel()

getYLabel

public String getYLabel()

getTitle

public String getTitle()

setKeyX

public void setKeyX(double x)

Sets the distance from the right edge of the graph for the top left cornder of the key.

Parameters:

x - distance from right edge of graph.

setKeyY

public void setKeyY(double y)

Sets the distance from the top of the graph to the top of the key.

Parameters:

y -

getKeyX

public double getKeyX()

getKeyY

public double getKeyY()

getGraphPanel

public GraphPanel getGraphPanel()

getDataCoordinates

public double[] getDataCoordinates(double panel_x,
                                   double panel_y)

Based on the coordinates of the panel, gets the coordinates in data space.

Parameters:

panel_x - x position on the panel.

panel_y - y position on the panel.

Returns:

the position in data space.

getImageCoordinates

public double[] getImageCoordinates(double real_x,
                                    double real_y)

Takes a coordinate in the data/real space and returns a coodinate in image space.

Parameters:

real_x - value of x in data space.

real_y - value of y in data space.

Returns:

{x,y} in px in image space. The image is the buffered image used to draw on a panel.

setTitleFont

public void setTitleFont(LGFont font)

setLabelFont

public void setLabelFont(LGFont labelFont)

setTicFont

public void setTicFont(LGFont ticFont)