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Vector data Graph
import java.awt.*;
import java.applet.*;
import java.net.URL;
import graph.*;
/*************************************************************************
**
** Applet example1b
** Version 1.0 September 1996
**
**************************************************************************
** Copyright (C) 1996 Leigh Brookshaw
**
** This program is free software; you can redistribute it and/or modify
** it under the terms of the GNU General Public License as published by
** the Free Software Foundation; either version 2 of the License, or
** (at your option) any later version.
**
** This program is distributed in the hope that it will be useful,
** but WITHOUT ANY WARRANTY; without even the implied warranty of
** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
** GNU General Public License for more details.
**
** You should have received a copy of the GNU General Public License
** along with this program; if not, write to the Free Software
** Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
**************************************************************************
**
** This is a simple applet that demonstrates how to use the basic features
** of the Plotting Class library. The data is vector data calculated
** locally by the applet
**
*************************************************************************/
public class example1b extends Applet {
G2Dint graph1;
VectorSet data1;
Axis xaxis1;
Axis yaxis1;
double data[];
int npx = 20;
int npy = 20;
Label title;
public void init() {
int i;
int j;
int count;
int kount;
double x, y;
double data[] = new double[4*npx*npy];
/*
** Get the passed parameters
*/
String st = "TITLE";
/*
** Create the Graph instance and modify the default behaviour
*/
graph1 = new G2Dint();
// graph1.square = true;
graph1.drawzero = false;
graph1.drawgrid = false;
graph1.setDataBackground(new Color(255,230,200));
/*
** Build the title
*/
title = new Label(st, Label.CENTER);
title.setFont(new Font("TimesRoman",Font.PLAIN,20));
this.setLayout( new BorderLayout() );
this.add("North", title);
this.add("Center", graph1);
/*
** Calculate the Vector Set.
*/
count = 0;
kount = 0;
for(j=0; j<npy; j++) {
y = -1.0 + j*2.0/((double)(npy-1));
for(i=0; i<npx; i++) {
x = -1.0 + i*2.0/((double)(npx-1));
if( x*x + y*y <= 1 ) {
kount++;
data[count++] = x;
data[count++] = y;
data[count++] = x;
data[count++] = y;
}
}
}
try {
data1 = new VectorSet(data,kount);
} catch(Exception e) {
System.out.println("Failed to load Vector Set!");
}
/*
** Set up the data
*/
graph1.borderTop = 50;
graph1.borderRight = 40;
data1.linecolor = Color.red;
data1.legend("Standard Vector");
/*
** Attach the data set to the graph
*/
graph1.attachDataSet(data1);
/*
** Attach data set to the Xaxes
*/
xaxis1 = graph1.createXAxis();
xaxis1.attachDataSet(data1);
xaxis1.setTitleText("Xaxis");
xaxis1.setTitleFont(new Font("TimesRoman",Font.PLAIN,20));
xaxis1.setLabelFont(new Font("Helvetica",Font.PLAIN,15));
/*
** Attach the data set to the YAxis
*/
yaxis1 = graph1.createYAxis();
yaxis1.attachDataSet(data1);
yaxis1.setTitleText("Yaxis");
yaxis1.setTitleFont(new Font("TimesRoman",Font.PLAIN,20));
yaxis1.setLabelFont(new Font("Helvetica",Font.PLAIN,15));
}
public static void main(String[] a){
javax.swing.JFrame f = new javax.swing.JFrame();
Applet app = new example1b();
app.init();
f.getContentPane().add (app);
f.pack();
f.setSize (new Dimension (500, 500));
f.setVisible(true);
}
}
