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kalmudunuru
ScatterPlot using jsp
2 Answer(s)      3 years ago
Posted in : Java Beginners


hi, can anybody provide me code for ScatterPlot using jsp.

thanks,


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August 9, 2011 at 4:16 PM


<%@page import="java.awt.RenderingHints"%>
<%@page import="org.jfree.chart.ChartFrame"%>
<%@page import=" org.jfree.chart.ChartPanel"%>
<%@page import=" org.jfree.chart.JFreeChart"%>
<%@page import=" org.jfree.chart.axis.NumberAxis"%>
<%@page import=" org.jfree.chart.plot.FastScatterPlot"%>
<%@page import=" org.jfree.ui.ApplicationFrame"%>
<%@page import=" org.jfree.ui.RefineryUtilities"%>

<%
         int COUNT = 500000;
         float[][] data = new float[2][COUNT];
         for (int i = 0; i < data[0].length; i++) {
            final float x = (float) i + 100000;
            data[0][i] = x;
            data[1][i] = 100000 + (float) Math.random() * COUNT;
        }
        final NumberAxis domainAxis = new NumberAxis("X");
        domainAxis.setAutoRangeIncludesZero(false);
        final NumberAxis rangeAxis = new NumberAxis("Y");
        rangeAxis.setAutoRangeIncludesZero(false);
        final FastScatterPlot plot = new FastScatterPlot(data, domainAxis, rangeAxis);
        final JFreeChart chart = new JFreeChart(" Scatter Graph ", plot);
        chart.getRenderingHints().put(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
        ChartFrame frame1=new ChartFrame("Scatter Chart",chart);
        frame1.setVisible(true);
        frame1.setSize(500,300);

   %>


August 9, 2011 at 5:05 PM


hi, thanks a lot for your code. i used this code and for data i used database connections. but iam not getting the graph.

plz find out my mistake..

 <%@page import="java.awt.RenderingHints"%>
<%@page import="org.jfree.chart.ChartFrame"%>
<%@page import=" org.jfree.chart.ChartPanel"%>
<%@page import=" org.jfree.chart.JFreeChart"%>
<%@page import=" org.jfree.chart.axis.NumberAxis"%>
<%@page import=" org.jfree.chart.plot.FastScatterPlot"%>
<%@page import=" org.jfree.ui.ApplicationFrame"%>
<%@page import=" org.jfree.ui.RefineryUtilities"%>
<%@page import="java.sql.*"%>               
<%
try
{

String connectionURL = "jdbc:mysql://localhost:3306/mysql";
Connection con;
Class.forName("com.mysql.jdbc.Driver");
// Get a Connection to the database
con = DriverManager.getConnection(connectionURL, "root", "root"); 
//Add the data into the database
String sql = "SELECT COUNT(*) FROM GRAPH";
Statement stm = con.createStatement();
stm.executeQuery(sql);
ResultSet rs= stm.getResultSet();

while (rs.next ()){
int count=rs.getInt(1);
 System.out.println(count);
 String sql1 = "SELECT XAXIS,YAXIS FROM GRAPH";
 Statement stm1 = con.createStatement();
 stm1.executeQuery(sql1);
 ResultSet rs1= stm1.getResultSet();

 while (rs1.next ()){
 double[][] data = new double[2][count];
 for(int k=0; k<=data[0].length; k++)
    {

                data[0][k] = rs1.getInt(1);
                data[1][k] = rs1.getInt(2);


            }





        final NumberAxis domainAxis = new NumberAxis("X");
        domainAxis.setAutoRangeIncludesZero(false);
        final NumberAxis rangeAxis = new NumberAxis("Y");
        rangeAxis.setAutoRangeIncludesZero(false);
        final FastScatterPlot plot = new FastScatterPlot(data, domainAxis, rangeAxis);
        final JFreeChart chart = new JFreeChart(" Scatter Graph ", plot);
        chart.getRenderingHints().put(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
        ChartFrame frame1=new ChartFrame("Scatter Chart",chart);
        frame1.setVisible(true);
        frame1.setSize(500,300);

}
}

}

catch(Exception e){
    System.out.println(e);
       }


   %>

thanks,



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