Everything

Java Class Source

Graph2D.java

The main plotting canvas. This class controls the look and feel of the graph.

G2Dint.java

An extension of the Graph2D class with event handling and graphics input.

DataSet.java

The class that contains the data.

VectorSet.java

An extension of the DataSet class to allow vector fields to be plotted.

LoadData.java

This class will use a seperate thread to load data into a data set from a a passed URL.

Axis.java

The class that calculates and draws the axis

TextLine.java

A class to format text on a line. It combines the Font, Color, and FontMetrics with the String.

RTextLine.java

An extension to the TextLine class that allows text to be rotated. The rotation is only in increments of 90°. (This is only for clarity of text. The ImageFilter used to rotate the text could be extended for arbitrary rotation.)

Markers.java

A class to either create or load from a URL stroked markers that can be placed at data points

ScanWord.java

An extension to the StreamTokenizer class to allow KeyWords to be recognised in the stream and returned as tokens.

BuildGraph.java

An extension to the ScanWord class that can parse an input stream and construct an entire plot based on the commands in the stream. This class allows plots to be constructed from simple scripts.

Contour.java

An extension to the G2Dint class that can plot and label contours. The actual contour curves are calculated by the IsoCurve class.

ScanString.java

A class to allow a string to be tokenized into numbers and predefined keywords.

ParseFunction.java

An extension to the ScanString class that will parse a function definition of at most 3 independent variables and return the result as a double.

SpecialFunction.java

An extension of the java.lang.Math class that defines some special function (such as Hyperbolic functions, Bessel functions) and defines some physical constants (such as Gravitation constant, mass of proton, Stefan-Boltzman constant etc.)

Java Applet Source

example1

An applet that plots data it has calculated

example1a

An applet that repeats example1 but plots two graphs side by side.

example2

An example of using Threads and the Graphing Class library to produce a StripChart.

example2a

An example of using Threads, double buffering and the Graphing Class library to produce a flicker free StripChart.

example3

An example of plotting data loaded from a URL and allowing the user to rescale the plot.

example4

An example of using the TextLine class.

example5

An example of using the BuildGraph class. Using this precompiled applet a user can incorporate any plot into a web document

example6

An example of using the Contour class.

example7

An example of using the ParseFunction class to plot a 1D function.

example8

An example of using the ParseFunction classK to contour a 2D function..

Other files

example5.data

Here is the input file that is used to build the plot in Example 5.

example5a.data

Here is the input file that is used to build the plot in Example 5a.

example5b.data

Here is the input file that is used to build the plot in Example 5b.

elliptical.data

Here is the data file that is plotted in Example 2 and Example 5.

marker.txt

The default marker description file.

parser.java

A stand alone java program that uses the ParseFunction class to parse the command line. Used to debug the ParseFunction and SpecialFunction class. Can Also be used to return values of function strings.

Leigh Brookshaw