A sample SOCRChartAPITest class

From Socr

Current revision as of 19:39, 27 June 2006

SOCRChartAPIDemo class

import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JTable;
import org.jfree.chart.ChartPanel;
import org.jfree.chart.JFreeChart;
import org.jfree.ui.RefineryUtilities;
import org.jfree.ui.ApplicationFrame;
import edu.ucla.stat.SOCR.chart.ChartGenerator_JTable;


	public class SOCRChartAPIDemo extends ApplicationFrame {

	    public SOCRChartAPIDemo(String title) {
	        super(title);
	     	 JTable dTable = createDataTable();
	         JPanel chartPanel = createDemoPanel(title, dTable);
	        // chartPanel.setPreferredSize(new java.awt.Dimension(500, 270));
	         setContentPane(chartPanel);
	    }

	   private JPanel createDemoPanel(String title, JTable dTable) {
	        JFreeChart chart = createChart(title, dTable);
	        return new ChartPanel(chart);
	    }

    
          private JFreeChart createChart(String title, JTable dataTable){
              JFreeChart chart;
			
             ChartGenerator_JTable chartMaker = new ChartGenerator_JTable();

	        int no_series = dataTable.getRowCount()-1;
		int no_category = dataTable.getColumnCount()-2;
			
                int[][] pairs = new int[no_category][2];
		for (int i=0; i<no_category; i++){
		   pairs[i][0] = i+1;    //column i store category i
		   pairs[i][1] = 0;    //column 0 stores series name
		 }

		 chart = chartMaker.getCategoryChart("Bar", title, "Category", "value", dataTable, no_category, pairs, "3D");

		 return chart;
	    }

/*
       Series     | Category 1  | Category 2  | Category 3  | Category 4  | Category 5  |
      --------------------------------------------------------------------------------------
       First      |  1.0        | 4.0         | 3.0        | 5.0       | 5.0         |
       Second     |  5.0        | 7.0         | 6.0        | 8.0       | 4.0         |
       Third      |  4.0        | 3.0         | 2.0        | 3.0       | 6.0         |

*/
	    private JTable createDataTable(){

	    	JTable dTable;
	    	String[] columnNames = new String[6];
	    	String[][] example = new String[3][6];
	    	
	    	columnNames[0]="Series";
	    	columnNames[1]= "Category 1"; 
		columnNames[2]= "Category 2"; 
	    	columnNames[3]= "Category 3"; 	
	    	columnNames[4]= "Category 4"; 
		columnNames[5]= "Category 5";
	    	
	        example[0][0]="First";example[0][1]="1.0";example[0][2]="4.0";
                example[0][3]="3.0";example[0][4]="5.0";example[0][5]="5.0";

                example[1][0]="Second";example[1][1]="5.0";example[1][2]="7.0";
                example[1][3]="6.0";example[1][4]="8.0";example[1][5]="4.0";

                example[2][0]="Third";example[2][1]="4.0";example[2][2]="3.0";
                example[2][3]="2.0";example[2][4]="3.0";example[2][5]="6.0";
	    	
	    	dTable = new JTable(example, columnNames);
                return dTable;
	    }
	
            /**
	     * Starting point for the demonstration application
	     *
	     * @param args  ignored.
	     */

	    public static void main(String[] args) {

	        final SOCRChartAPIDemo demo = new SOCRChartAPIDemo("3D Bar Chart Demo 1");
	        demo.pack();
	        RefineryUtilities.centerFrameOnScreen(demo);
	        demo.setVisible(true);
	    }

	}

The createChart method is the center part of the class. In this method, the pairs value is being set first, then a get*Chart method of the ChartGenerator_JTable class is called to generate the chart figure. The init[][] pairs provides the coulmn info about the JTable and is used by the ChartGenerator_JTable to generate dataset for creating the chart.

See List of Charts for more examples. The createChart method's source code for each example is listed for your reference.