/*
* -------------------------------------------------------------------------
* $Id: RandomGen.java,v 1.8 2004/05/26 18:27:38 estewart Exp $
* -------------------------------------------------------------------------
* Copyright (c) 1999 Visual Numerics Inc. All Rights Reserved.
*
* This software is confidential information which is proprietary to
* and a trade secret of Visual Numerics, Inc. Use, duplication or
* disclosure is subject to the terms of an appropriate license
* agreement.
*
* VISUAL NUMERICS MAKES NO REPRESENTATIONS OR WARRANTIES ABOUT THE
* SUITABILITY OF THE SOFTWARE, EITHER EXPRESS OR IMPLIED, INCLUDING
* BUT NOT LIMITED TO THE IMPLIED WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT. VISUAL
* NUMERICS SHALL NOT BE LIABLE FOR ANY DAMAGES SUFFERED BY LICENSEE
* AS A RESULT OF USING, MODIFYING OR DISTRIBUTING THIS SOFTWARE OR
* ITS DERIVATIVES.
*--------------------------------------------------------------------------
*/
package com.imsl.demo.RandomGen;
import java.awt.*;
import com.imsl.chart.*;
import com.imsl.stat.Random;
import com.imsl.math.Cholesky;
import com.imsl.demo.gallery.Describe;
/**
*
* @author Masayuki Saito
* @created October 21, 2002
*/
public class RandomGen extends javax.swing.JFrame {
private javax.swing.JDialog displayFrame;
private JPanelChart displayArea;
private Bar bar;
private int randomK = 0;
private int numPoints = 1000;
private int numBins = 20;
private final int numDist = 21;
private javax.swing.JRadioButton rb[] = new javax.swing.JRadioButton[numDist];
private String[] rname = new String[numDist];
private boolean textUpdateFlag;
/** Creates new form RandomGen */
public RandomGen(boolean exitOnClose) {
if (!exitOnClose) {
// remove the WindowListener, installed by JFrame, that
// exits the application when the window is closed.
Object l[] = getListeners(java.awt.event.WindowListener.class);
for (int k = 0; k < l.length; k++) {
removeWindowListener((java.awt.event.WindowListener)l[k]);
}
}
initComponents();
jMenuItem1.setAccelerator(javax.swing.KeyStroke.getKeyStroke(java.awt.event.KeyEvent.VK_P, (java.awt.event.ActionEvent.CTRL_MASK)));
Describe des = new Describe(this, "/com/imsl/demo/RandomGen/RandomGen.html");
des.show();
Dimension ds = des.getSize();
Dimension ss = getToolkit().getScreenSize();
setResizable(false);
setLocation(ss.width-ds.width, ds.height);
Dimension ts = getSize();
int w = Math.min(ss.width/2, ss.height-ds.height-32);
w = Math.min(w, ss.width-ts.width-ss.width/4);
displayArea = new JPanelChart();
displayArea.setPreferredSize(new java.awt.Dimension(w, w));
displayArea.setChart(new Chart());
displayFrame = new javax.swing.JDialog();
displayFrame.setTitle("Distribution");
displayFrame.setLocation(ss.width-ds.width+ts.width, ds.height);
displayFrame.getContentPane().add(displayArea, java.awt.BorderLayout.CENTER);
displayFrame.pack();
displayFrame.show();
rb[randomK].setSelected(true);
//methodActionPerformed(String.valueOf(numPoints));
updateChart();
}
/** This method is called from within the constructor to
* initialize the form.
* WARNING: Do NOT modify this code. The content of this method is
* always regenerated by the Form Editor.
*/
private void initComponents() {//GEN-BEGIN:initComponents
jPanel1 = new javax.swing.JPanel();
jPanel2 = new javax.swing.JPanel();
jLabel1 = new javax.swing.JLabel();
jTextField1 = new javax.swing.JTextField();
jLabel2 = new javax.swing.JLabel();
jTextField2 = new javax.swing.JTextField();
jPanel3 = new javax.swing.JPanel();
set_rname();
for (int i=0; i<numDist ;i++){
rb[i] = new javax.swing.JRadioButton(rname[i]);
jPanel3.add(rb[i]);
rb[i].addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
String eventname = new String(evt.getActionCommand());
methodActionPerformed(eventname);
}
});
}
jPanel4 = new javax.swing.JPanel();
jTextArea1 = new javax.swing.JTextArea();
jMenuBar1 = new javax.swing.JMenuBar();
jMenu1 = new javax.swing.JMenu();
jMenuItem1 = new javax.swing.JMenuItem();
jSeparator = new javax.swing.JSeparator();
jMenuItem2 = new javax.swing.JMenuItem();
jMenu2 = new javax.swing.JMenu();
jMenuItem3 = new javax.swing.JMenuItem();
getContentPane().setLayout(new java.awt.GridLayout(1, 1));
setTitle("Random Number Distributions ");
addWindowListener(new java.awt.event.WindowAdapter() {
public void windowClosing(java.awt.event.WindowEvent evt) {
exitForm(evt);
}
});
jPanel1.setLayout(new java.awt.BorderLayout());
jPanel1.setMaximumSize(new java.awt.Dimension(300, 400));
jPanel1.setPreferredSize(new java.awt.Dimension(300, 400));
jPanel2.setLayout(new java.awt.GridLayout(2, 2));
jPanel2.setMaximumSize(new java.awt.Dimension(400, 40));
jPanel2.setMinimumSize(new java.awt.Dimension(0, 0));
jPanel2.setPreferredSize(new java.awt.Dimension(300, 40));
jLabel1.setHorizontalAlignment(javax.swing.SwingConstants.RIGHT);
jLabel1.setText("Number of Samples: ");
jLabel1.setMaximumSize(new java.awt.Dimension(100, 20));
jLabel1.setMinimumSize(new java.awt.Dimension(25, 10));
jLabel1.setPreferredSize(new java.awt.Dimension(100, 20));
jPanel2.add(jLabel1);
jTextField1.setText(String.valueOf(numPoints));
jTextField1.setMaximumSize(new java.awt.Dimension(50, 20));
jTextField1.setMinimumSize(new java.awt.Dimension(0, 0));
jTextField1.setPreferredSize(new java.awt.Dimension(50, 20));
jTextField1.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jTextField1ActionPerformed(evt);
}
});
jPanel2.add(jTextField1);
jLabel2.setHorizontalAlignment(javax.swing.SwingConstants.RIGHT);
jLabel2.setText("Number of bins: ");
jLabel2.setMaximumSize(new java.awt.Dimension(100, 20));
jLabel2.setPreferredSize(new java.awt.Dimension(100, 20));
jPanel2.add(jLabel2);
jTextField2.setText(String.valueOf(numBins));
jTextField2.setMaximumSize(new java.awt.Dimension(50, 20));
jTextField2.setPreferredSize(new java.awt.Dimension(50, 20));
jTextField2.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jTextField2ActionPerformed(evt);
}
});
jPanel2.add(jTextField2);
jPanel1.add(jPanel2, java.awt.BorderLayout.NORTH);
jPanel3.setLayout(new java.awt.GridLayout(11, 2));
jPanel3.setMaximumSize(new java.awt.Dimension(400, 250));
jPanel3.setPreferredSize(new java.awt.Dimension(300, 400));
jPanel1.add(jPanel3, java.awt.BorderLayout.CENTER);
jPanel4.setLayout(new java.awt.GridLayout(1, 0));
jPanel4.setMaximumSize(new java.awt.Dimension(400, 100));
jPanel4.setPreferredSize(new java.awt.Dimension(300, 100));
jTextArea1.setEditable(false);
jTextArea1.setMaximumSize(new java.awt.Dimension(300, 100));
jTextArea1.setMinimumSize(new java.awt.Dimension(0, 0));
jTextArea1.setPreferredSize(new java.awt.Dimension(300, 100));
jPanel4.add(jTextArea1);
jPanel1.add(jPanel4, java.awt.BorderLayout.SOUTH);
getContentPane().add(jPanel1);
jMenu1.setMnemonic('F');
jMenu1.setText("File");
jMenuItem1.setMnemonic('P');
jMenuItem1.setText("Print...");
jMenuItem1.setIcon(new javax.swing.ImageIcon(getClass().getResource("/com/imsl/demo/RandomGen/Print16.gif")));
jMenuItem1.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jMenuItem1ActionPerformed(evt);
}
});
jMenu1.add(jMenuItem1);
jMenu1.add(jSeparator);
jMenuItem2.setMnemonic('x');
jMenuItem2.setText("Exit");
jMenuItem2.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jMenuItem2ActionPerformed(evt);
}
});
jMenu1.add(jMenuItem2);
jMenuBar1.add(jMenu1);
jMenu2.setMnemonic('H');
jMenu2.setText("Help");
jMenuItem3.setMnemonic('A');
jMenuItem3.setText("About");
jMenuItem3.setIcon(new javax.swing.ImageIcon(getClass().getResource("/com/imsl/demo/RandomGen/Help16.gif")));
jMenuItem3.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jMenuItem3ActionPerformed(evt);
}
});
jMenu2.add(jMenuItem3);
jMenuBar1.add(jMenu2);
setJMenuBar(jMenuBar1);
pack();
}//GEN-END:initComponents
private void jTextField1FocusLost(java.awt.event.FocusEvent evt) {//GEN-FIRST:event_jTextField1FocusLost
jTextField1.postActionEvent();
}//GEN-LAST:event_jTextField1FocusLost
private void jTextField1ActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_jTextField1ActionPerformed
numPoints = new Integer(jTextField1.getText().trim()).intValue();
if (!textUpdateFlag)
updateChart();
}//GEN-LAST:event_jTextField1ActionPerformed
private void jTextField2ActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_jTextField2ActionPerformed
numBins = new Integer(jTextField2.getText().trim()).intValue();
if (!textUpdateFlag)
updateChart();
}//GEN-LAST:event_jTextField2ActionPerformed
private void jMenuItem3ActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_jMenuItem3ActionPerformed
// Help -> About
String about = "This demonstration extends javax.swing.JFrame instead of \n" +
"com.imsl.chart.JFrameChart like most of the other demos. \n" +
"Therefore, you do not have access to the standard Print \n" +
"and About menus that JFrameChart provides. However, that \n" +
"functionality is easily duplicated, as it is here.";
javax.swing.JOptionPane.showMessageDialog(this, about, "About", javax.swing.JOptionPane.INFORMATION_MESSAGE);
}//GEN-LAST:event_jMenuItem3ActionPerformed
private void jMenuItem1ActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_jMenuItem1ActionPerformed
// File -> Print
java.awt.print.PrinterJob printJob = java.awt.print.PrinterJob.getPrinterJob();
Chart chart = displayArea.getChart();
printJob.setPrintable(chart);
if (printJob.printDialog()){
try {
printJob.print();
} catch (Exception e) {
javax.swing.JOptionPane.showMessageDialog(this, e.getMessage(), "Exception", javax.swing.JOptionPane.ERROR_MESSAGE);
e.printStackTrace();
}
}
}//GEN-LAST:event_jMenuItem1ActionPerformed
private void jMenuItem2ActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_jMenuItem2ActionPerformed
// File -> Exit
System.exit(0);
}//GEN-LAST:event_jMenuItem2ActionPerformed
private void methodActionPerformed(String eventname) {
textUpdateFlag = true;
//jTextField1.postActionEvent();
jTextField2.postActionEvent();
textUpdateFlag = false;
for(int i=0; i<numDist; i++){
if(!eventname.equals(rname[i]))
rb[i].setSelected(false);
else {
rb[i].setSelected(true);
randomK = i;
}
}
updateChart();
}
private void updateChart() {
displayArea.setChart(new Chart());
Chart chart = displayArea.getChart();
String output = setup(chart, numPoints, numBins);
if (!displayFrame.isVisible()) {
displayFrame.setVisible(true);
}
displayFrame.repaint();
jTextArea1.setText(output);
}
// ++++++++++ setup method ++++++++++ //
// ++ Create Histgram bar graph ++ //
// ++++++++++++++++++++++++++++++++++ //
private String setup(Chart chart, int numPoints, int numBins) {
bar = null;
AxisXY axis = new AxisXY(chart);
double v[] = new double[numPoints];
// Generate some random data
Random r = new Random();
String x[] = new String[numBins];
double y[] = new double[numBins];
// -- Calc. Histgram data : y --
for (int kitem = 0; kitem < numBins; kitem++) y[kitem]=0;
double maxv = -10000;
double minv = 10000;
if (randomK != 20) {
v = new double[numPoints];
for (int i = 0; i < numPoints; i++) { // -- Max/Min value --
v[i] = randomValue(r);
if (maxv < v[i]) maxv=v[i];
if (minv > v[i]) minv=v[i];
}
} else {
double a[][] = {{ 1, -3, 2},{-3, 10, -5},{ 2, -5, 6}};
try {
Cholesky matrix = new Cholesky(a);
int k = 3;
v = r.nextMultivariateNormal(k, matrix);
for (int i = 0; i < v.length; i++) {
if (v[i] < minv) minv=v[i];
if (v[i] > maxv) maxv=v[i];
}
} catch (Exception e) {
javax.swing.JOptionPane.showMessageDialog(this, e.getMessage(), "Exception", javax.swing.JOptionPane.ERROR_MESSAGE);
e.printStackTrace();
}
}
double wx = (maxv-minv)/numBins;
for (int kitem = 0; kitem < v.length; kitem++) {
int i;
if (maxv == v[kitem]){
i = numBins-1;
} else {
i = (int) ((v[kitem]-minv)/wx);
}
y[i] = y[i] + 1;
}
// Create an instance of a Bar Chart
bar = new Bar(axis, y);
chart.getChartTitle().setTitle(rname[randomK]+" Random Distribution");
chart.getChartTitle().setFontStyle(java.awt.Font.BOLD);
bar.setFillOutlineType(Bar.FILL_TYPE_SOLID);
bar.getBarSet(0).setFillColor(Color.red);
// Setup the X axis for a labeled bar chart.
String spacer = " : ";
String labels[] = new String[numBins];
java.text.DecimalFormat df = new java.text.DecimalFormat();
if (randomK != 15) {
df.applyPattern("##0.00");
} else { // special format for logNormal
df.applyPattern("0.0000");
}
labels[0] = String.valueOf(df.format(minv)) + spacer + String.valueOf(df.format(minv+wx));
for (int i = 1; i < numBins-1; i++) {
labels[i] = String.valueOf(df.format(minv + i*wx)) + spacer + String.valueOf(df.format(minv + (i+1)*wx));
}
labels[numBins-1] = String.valueOf(df.format(maxv-wx)) + spacer + String.valueOf(df.format(maxv));
bar.setLabels(labels, Data.BAR_TYPE_VERTICAL);
axis.getAxisX().getAxisLabel().setTextAngle(90);
axis.getAxisY().getAxisTitle().setTitle("Number\n");
axis.setViewport(0.1,0.95,0.1,0.8);
if (randomK != 20) {
axis.getAxisY().setTextFormat(new java.text.DecimalFormat("###0"));
} else {
axis.getAxisY().setTextFormat(new java.text.DecimalFormat("#0.0"));
}
// +++++ Print Random Name, Sample No. MAX, MIN +++++
StringBuffer sb = new StringBuffer();
sb.append("Random Distribution: "+rname[randomK]+"\n");
if (randomK != 20) {
sb.append(" # Samples: "+numPoints+"\n");
sb.append(" # Bins: "+numBins+"\n");
} else {
sb.append(" Matrix: a[ ][ ] = {{ 1, -3, 2},{-3, 10, -5},{ 2, -5, 6}}\n");
}
sb.append(" Max Value: "+maxv+"\n");
sb.append(" Min Value: "+minv+"\n");
return sb.toString();
}
// ++++++++++ randomValue ++++++++++ //
// ++ Create next Random value ++ //
// +++++++++++++++++++++++++++++++++ //
double randomValue(Random r) {
double nr = 0.0;
if (randomK == 0) nr = r.nextDouble();
if (randomK == 1) nr = r.nextBeta(1.0d, 0.5d);
if (randomK == 2) nr = r.nextNormal();
if (randomK == 3) nr = r.nextNormalAR();
if (randomK == 4) nr = r.nextBinomial(5, 0.5d);
if (randomK == 5) nr = r.nextCauchy();
if (randomK == 6) nr = r.nextChiSquared(5);
if (randomK == 7) nr = r.nextGamma(0.5);
if (randomK == 8) nr = r.nextGeometric(0.5);
if (randomK == 9) nr = r.nextHypergeometric(5, 5, 11);
if (randomK == 10) nr = r.nextLogarithmic(0.5d);
if (randomK == 11) nr = r.nextNegativeBinomial(0.5d, 0.5d);
if (randomK == 12) nr = r.nextPoisson(10d);
if (randomK == 13) nr = r.nextExponential();
if (randomK == 14) nr = r.nextExponentialMix(30d, 10d, 0.5d);
if (randomK == 15) nr = r.nextLogNormal(0d, .001d);
if (randomK == 16) nr = r.nextTriangular();
if (randomK == 17) nr = r.nextStudentsT(5.0d);
if (randomK == 18) nr = r.nextVonMises(1.0e-7d);
if (randomK == 19) nr = r.nextWeibull(5d);
return nr;
}
// ++++++++++ set_rname method ++++++++++ //
// ++ Set 21 Random names. ++ //
// ++++++++++++++++++++++++++++++++++++++ //
public void set_rname(){
rname[0] = "Standard Pseudo";
rname[1] = "Beta";
rname[2] = "Normal";
rname[3] = "NormalAR";
rname[4] = "Binomial";
rname[5] = "Cauchy";
rname[6] = "ChiSquare";
rname[7] = "Gamma";
rname[8] = "Geometric";
rname[9] = "Hypergeometric";
rname[10] = "Logarithmic";
rname[11] = "NegativeBinomial";
rname[12] = "Poisson";
rname[13] = "Exponential";
rname[14] = "ExponentialMix";
rname[15] = "LogNormal";
rname[16] = "Triangular";
rname[17] = "StudentT";
rname[18] = "VonMises";
rname[19] = "Weibull";
rname[20] = "MultivariateNormal";
}
/** Exit the Application */
private void exitForm(java.awt.event.WindowEvent evt) {//GEN-FIRST:event_exitForm
setVisible(false);
displayFrame.setVisible(false);
displayFrame.dispose();
dispose();
}//GEN-LAST:event_exitForm
/**
* @param args the command line arguments
*/
public static void main(String args[]) {
boolean exitOnClose = true;
if (args.length > 0 && args[0].equals("-noexit")) {
exitOnClose = false;
}
new RandomGen(exitOnClose).show();
}
// Variables declaration - do not modify//GEN-BEGIN:variables
private javax.swing.JPanel jPanel4;
private javax.swing.JLabel jLabel1;
private javax.swing.JMenuItem jMenuItem2;
private javax.swing.JSeparator jSeparator;
private javax.swing.JMenu jMenu2;
private javax.swing.JPanel jPanel3;
private javax.swing.JLabel jLabel2;
private javax.swing.JMenuItem jMenuItem3;
private javax.swing.JPanel jPanel2;
private javax.swing.JMenuItem jMenuItem1;
private javax.swing.JTextArea jTextArea1;
private javax.swing.JPanel jPanel1;
private javax.swing.JTextField jTextField2;
private javax.swing.JMenu jMenu1;
private javax.swing.JTextField jTextField1;
private javax.swing.JMenuBar jMenuBar1;
// End of variables declaration//GEN-END:variables
}