how to using button to change linechart

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This is code, but how the ability is pressing button"change chart", by at first of figure a get empty of sketch, after becoming to obtain data of curve sketch??

Code :

 
import java.awt.BorderLayout;
 
import java.awt.Dimension;
import java.awt.FlowLayout;
 
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;
 
import javax.swing.JButton;
import javax.swing.JPanel;
 
import org.jfree.chart.ChartPanel;
import org.jfree.chart.JFreeChart;
import org.jfree.chart.axis.AxisLocation;
import org.jfree.chart.axis.DateAxis;
import org.jfree.chart.axis.NumberAxis;
import org.jfree.chart.plot.CombinedDomainXYPlot;
import org.jfree.chart.plot.PlotOrientation;
import org.jfree.chart.plot.XYPlot;
import org.jfree.chart.renderer.xy.StandardXYItemRenderer;
import org.jfree.data.time.Day;
import org.jfree.data.time.Hour;
import org.jfree.data.time.TimeSeries;
import org.jfree.data.time.TimeSeriesCollection;
import org.jfree.data.xy.IntervalXYDataset;
import org.jfree.data.xy.XYDataset;
import org.jfree.ui.ApplicationFrame;
import org.jfree.ui.RefineryUtilities;
 
public class ResponseChart extends ApplicationFrame {
 
  public static ArrayList mlist;
 
  public static ArrayList jlist;
 
  public static ArrayList lrlist;
 
  public static ArrayList bwlist;
 
  public static ArrayList dlist;
 
  public static ArrayList<String> datelist;
 
  public ResponseChart(String s) {
    super(s);
    JPanel content = new JPanel(new FlowLayout());
    JFreeChart jfreechart = createCombinedChart();
    JPanel toppanel = new JPanel(new BorderLayout()) ;
 
    ChartPanel chartpanel = new ChartPanel(jfreechart, true, true, true,
        true, true);
    JButton btn =new JButton("change chart");
 
          toppanel.setSize(400,400);
       toppanel.add(btn);
      content.add(toppanel,BorderLayout.NORTH);
 
    content.add(chartpanel, BorderLayout.SOUTH);
 
    chartpanel.setPreferredSize(new Dimension(500, 270));
    setContentPane(content);
  }
 
 
  public static JFreeChart createCombinedChart() {
 
 
    XYDataset xydataset1 = createdelayDataset();
    StandardXYItemRenderer standardxyitemrenderer1 = new StandardXYItemRenderer();
    NumberAxis numberaxis1 = new NumberAxis("price");
    numberaxis1.setAutoRangeIncludesZero(false);
    XYPlot xyplot1 = new XYPlot(xydataset1, null, numberaxis1,
        standardxyitemrenderer1);
    xyplot1.setRangeAxisLocation(AxisLocation.TOP_OR_LEFT);
 
    XYDataset xydataset2 = createdelayDataset();
    StandardXYItemRenderer standardxyitemrenderer2 = new StandardXYItemRenderer();
    NumberAxis numberaxis2 = new NumberAxis("averagy");
    numberaxis2.setAutoRangeIncludesZero(false);
    XYPlot xyplot2 = new XYPlot(xydataset2, null, numberaxis2,
        standardxyitemrenderer2);
    xyplot2.setRangeAxisLocation(AxisLocation.TOP_OR_LEFT);
 
 
 
    CombinedDomainXYPlot combineddomainxyplot = new CombinedDomainXYPlot(
        new DateAxis("Year"));
    combineddomainxyplot.setGap(10D);
    combineddomainxyplot.add(xyplot1, 1);
    combineddomainxyplot.add(xyplot2, 1);
 
 
    combineddomainxyplot.setOrientation(PlotOrientation.VERTICAL);
    return new JFreeChart(null,
        JFreeChart.DEFAULT_TITLE_FONT, combineddomainxyplot, true);
  }
 
 
 
 
  private static IntervalXYDataset createDataset1() {
    mlist = jdbcmysql.getmlist(); 
    datelist = jdbcmysql.getdatelist(); //2009-10-26
    //TimeSeries series1 = new TimeSeries("Series 1", Day.class);
    TimeSeries series1 = new TimeSeries("Series 1",Hour.class);  
    SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
    for(int i =0;i<mlist.size();i++)
    try {
       java.util.Date d  = new Date();
 
      String datestr = datelist.get(i).toString();
       d = formatter.parse(datestr);
      System.out.println("***************"+d  );
      double value = Double.parseDouble(mlist.get(i).toString());
      series1.add(new Hour(formatter.parse(datestr)), value);
 
    } catch (java.text.ParseException e) {
      // TODO 自動產生 catch 區塊
      e.printStackTrace();
    }
 
    return new TimeSeriesCollection(series1);
 
  }
 
  private static IntervalXYDataset createdelayDataset() {
    dlist = jdbcmysql.getdlist(); 
    datelist = jdbcmysql.getdatelist(); //2009-10-26
    //TimeSeries series1 = new TimeSeries("Series 1", Day.class);
    TimeSeries series1 = new TimeSeries("Series 1",Hour.class);  
    SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
    for(int i =0;i<dlist.size();i++)
    try {
       java.util.Date d  = new Date();
 
      String datestr = datelist.get(i).toString();
       d = formatter.parse(datestr);
      System.out.println("***************"+d  );
      double value = Double.parseDouble(dlist.get(i).toString());
      series1.add(new Hour(formatter.parse(datestr)), value);
 
    } catch (java.text.ParseException e) {
      // TODO 自動產生 catch 區塊
      e.printStackTrace();
    }
 
    return new TimeSeriesCollection(series1);
 
  }
 
  public static void main(String args[]) {
     jdbcmysql db = new jdbcmysql();
 
     db.SelectTable();
    ResponseChart combinedxyplotdemo1 = new ResponseChart(
        "CombinedDomainXYPlot   Demo");
    combinedxyplotdemo1.pack();
    RefineryUtilities.centerFrameOnScreen(combinedxyplotdemo1);
    combinedxyplotdemo1.setVisible(true);
  }
}

October 27th, 2009, 03:17 PM
copeg

Re: how to using button to change linechart

If I understand your question correctly, you're JButton is not working? In your ResponseChart constructor you do not seem to have added a listener to the JButton. See How to Write an Action Listener (The Java™ Tutorials > Creating a GUI With JFC/Swing > Writing Event Listeners) and http://www.javaprogrammingforums.com...ava-swing.html

Re: how to using button to change linechart

hi
i have modify my code as follows :

Code :

import java.awt.BorderLayout;
 
import java.awt.Dimension;
import java.awt.FlowLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
 
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;
 
import javax.swing.JButton;
import javax.swing.JPanel;
 
 
import org.jfree.chart.ChartPanel;
import org.jfree.chart.JFreeChart;
import org.jfree.chart.axis.AxisLocation;
import org.jfree.chart.axis.DateAxis;
import org.jfree.chart.axis.NumberAxis;
import org.jfree.chart.plot.CombinedDomainXYPlot;
import org.jfree.chart.plot.PlotOrientation;
import org.jfree.chart.plot.XYPlot;
import org.jfree.chart.renderer.xy.StandardXYItemRenderer;
import org.jfree.data.time.Day;
import org.jfree.data.time.Hour;
import org.jfree.data.time.TimeSeries;
import org.jfree.data.time.TimeSeriesCollection;
import org.jfree.data.xy.IntervalXYDataset;
import org.jfree.data.xy.XYDataset;
import org.jfree.ui.ApplicationFrame;
import org.jfree.ui.RefineryUtilities;
 
public class ResponseChart extends ApplicationFrame {
 
	public static ArrayList mlist;
 
	public static ArrayList jlist;
 
	public static ArrayList lrlist;
 
	public static ArrayList bwlist;
 
	public static ArrayList dlist;
 
	public static ArrayList<String> datelist;
 
 
	public ResponseChart(String s) {
		super(s);
		JPanel content = new JPanel(new FlowLayout());
		  JFreeChart jfreechart=createCombinedChart(); 
		JPanel toppanel = new JPanel(new BorderLayout()) ;
 
		ChartPanel chartpanel = new ChartPanel(jfreechart, true, true, true,
				true, true);
		JButton btn =new JButton("change chart");
		btn.addActionListener(new ActionListener() {
 
            public void actionPerformed(ActionEvent e) {
       		 jdbcmysql db = new jdbcmysql();
 
    		 db.SelectTable();
            	JFreeChart jfreechart = createCombinedChart();
            	ChartPanel	chartpanel = new ChartPanel(jfreechart, true, true, true,
        				true, true);
			System.out.println("You clicked the button");
		}
	}); 
 
 
 
	        toppanel.setSize(400,400);
	     toppanel.add(btn);
			content.add(toppanel,BorderLayout.NORTH);
 
		content.add(chartpanel, BorderLayout.SOUTH);
 
		chartpanel.setPreferredSize(new Dimension(500, 270));
		setContentPane(content);
	}
 
 
 
	public static JFreeChart createCombinedChart() {
 
 
		XYDataset xydataset1 = createdelayDataset();
		StandardXYItemRenderer standardxyitemrenderer1 = new StandardXYItemRenderer();
		NumberAxis numberaxis1 = new NumberAxis("price");
		numberaxis1.setAutoRangeIncludesZero(false);
		XYPlot xyplot1 = new XYPlot(xydataset1, null, numberaxis1,
				standardxyitemrenderer1);
		xyplot1.setRangeAxisLocation(AxisLocation.TOP_OR_LEFT);
 
		XYDataset xydataset2 = createdelayDataset();
		StandardXYItemRenderer standardxyitemrenderer2 = new StandardXYItemRenderer();
		NumberAxis numberaxis2 = new NumberAxis("averagy");
		numberaxis2.setAutoRangeIncludesZero(false);
		XYPlot xyplot2 = new XYPlot(xydataset2, null, numberaxis2,
				standardxyitemrenderer2);
		xyplot2.setRangeAxisLocation(AxisLocation.TOP_OR_LEFT);
 
 
 
		CombinedDomainXYPlot combineddomainxyplot = new CombinedDomainXYPlot(
				new DateAxis("Year"));
		combineddomainxyplot.setGap(10D);
		combineddomainxyplot.add(xyplot1, 1);
		combineddomainxyplot.add(xyplot2, 1);
 
 
		combineddomainxyplot.setOrientation(PlotOrientation.VERTICAL);
		return new JFreeChart(null,
				JFreeChart.DEFAULT_TITLE_FONT, combineddomainxyplot, true);
	}
 
 
 
 
	private static IntervalXYDataset createDataset1() {
		mlist = jdbcmysql.getmlist(); 
		datelist = jdbcmysql.getdatelist(); //2009-10-26
		//TimeSeries series1 = new TimeSeries("Series 1", Day.class);
		TimeSeries series1 = new TimeSeries("Series 1",Hour.class);  
		SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
		for(int i =0;i<mlist.size();i++)
		try {
			 java.util.Date d  = new Date();
 
			String datestr = datelist.get(i).toString();
			 d = formatter.parse(datestr);
			System.out.println("***************"+d  );
			double value = Double.parseDouble(mlist.get(i).toString());
			series1.add(new Hour(formatter.parse(datestr)), value);
 
		} catch (java.text.ParseException e) {
			// TODO 自動產生 catch 區塊
			e.printStackTrace();
		}
 
		return new TimeSeriesCollection(series1);
 
	}
 
	private static IntervalXYDataset createdelayDataset() {
		dlist = jdbcmysql.getdlist(); 
		datelist = jdbcmysql.getdatelist(); //2009-10-26
		//TimeSeries series1 = new TimeSeries("Series 1", Day.class);
		TimeSeries series1 = new TimeSeries("Series 1",Hour.class);  
		SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
		for(int i =0;i<dlist.size();i++)
		try {
			 java.util.Date d  = new Date();
 
			String datestr = datelist.get(i).toString();
			 d = formatter.parse(datestr);
			System.out.println("***************"+d  );
			double value = Double.parseDouble(dlist.get(i).toString());
			series1.add(new Hour(formatter.parse(datestr)), value);
 
		} catch (java.text.ParseException e) {
			// TODO 自動產生 catch 區塊
			e.printStackTrace();
		}
 
		return new TimeSeriesCollection(series1);
 
	}
 
 
 
	public static void main(String args[]) {
 
		ResponseChart combinedxyplotdemo1 = new ResponseChart(
				"CombinedDomainXYPlot   Demo");
		combinedxyplotdemo1.pack();
		RefineryUtilities.centerFrameOnScreen(combinedxyplotdemo1);
		combinedxyplotdemo1.setVisible(true);
	}
}

but still can't work , do you have any idea about it ?

October 30th, 2009, 12:53 PM
copeg

Re: how to using button to change linechart

Does your button fire (eg does it print out your debugging "You clicked the button")? My guess is that it does, but you create a new chartPanel without adding it to the GUI (and I'm also unclear of the changes you make, but thats beside the point). Solution 1 would be to not create a whole new chartpanel but rather just update the old one upon button click. Solution 2 would be to create the new chartpanel as this code demonstrates, and add it to the gui (make sure to call validate() on your frame to update the changes).