android scatter plot graph
<p>I want to create scatter plot graph in android, and also want to access value of point that is clicked by user. <br/><br/>
can any one please help me?
I am not having any idea of how to create graph in android. I am using <strong>Graph View.jar</strong> file to create graph but not able to access plots value.<br/><br/>
 here is my code:</p>

<pre><code>package com.example.test;
import java.text.FieldPosition;
import java.text.Format;
import java.text.ParsePosition;
import java.util.Arrays;

import android.app.Activity;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.PointF;
import android.os.Bundle;
import android.view.Menu;

import com.androidplot.series.XYSeries;
import com.androidplot.xy.LineAndPointFormatter;
import com.androidplot.xy.PointFormatter;
import com.androidplot.xy.SimpleXYSeries;
import com.androidplot.xy.XYPlot;
import com.androidplot.xy.XYStepMode;

public class MainActivity extends Activity {

    private XYPlot xyPlot;

    final String[] mMonths = new String[] {
        "Jan","Feb", "Mar","Apr", "May","Jun",
        "Jul", "Aug","Sep","Oct", "Nov","Dec"
    };

    @Override
    public void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        // initialize our XYPlot reference:
        xyPlot = (XYPlot) findViewById(R.id.xyplot);

        Number[] income =  {2000, 2500, 2700, 3000, 2800, 3500, 3700, 3800 };
     //   Number[] expense = {2200, 2700, 2900, 2800, 2600, 3000, 3300, 3400 };

        // Converting the above income array into XYSeries
        XYSeries incomeSeries = new SimpleXYSeries(
            Arrays.asList(income),                   // array =&gt; list
            SimpleXYSeries.ArrayFormat.Y_VALS_ONLY , // Y_VALS_ONLY means use the element index as the x value
            "Income");                                  // Title of this series

        // Converting the above expense array into XYSeries
//        XYSeries expenseSeries = new SimpleXYSeries(
//            Arrays.asList(expense),                 // array =&gt; list
//            SimpleXYSeries.ArrayFormat.Y_VALS_ONLY, // Y_VALS_ONLY means use the element index as the x value
//            "Expense");                                // Title of this series

        // Create a formatter to format Line and Point of income series

        PointFormatter pformater = new PointFormatter() {

            @Override
            public void draw(Canvas arg0, Number arg1, PointF arg2) {
                // TODO Auto-generated method stub

            }
        };
        LineAndPointFormatter incomeFormat = new LineAndPointFormatter(
            Color.rgb(0, 0, 0),                   // line color
            Color.rgb(200, 200, 200),               // point color
            null );                                    // fill color (none)

        // Create a formatter to format Line and Point of expense series
//        LineAndPointFormatter expenseFormat = new LineAndPointFormatter(
//            Color.rgb(0, 0, 0),                   // line color
//            Color.rgb(200, 200, 200),               // point color
//            null);                                    // fill color (none)
// 
        // add expense series to the xyplot:
      //  xyPlot.addSeries(expenseSeries,expenseFormat);

        // add income series to the xyplot:
        xyPlot.addSeries(incomeSeries, incomeFormat);

        // Formatting the Domain Values ( X-Axis )
        xyPlot.setDomainValueFormat(new Format() {

            @Override
            public StringBuffer format(Object obj, StringBuffer toAppendTo, FieldPosition pos) {
                return new StringBuffer( mMonths[ ( (Number)obj).intValue() ]  );
            }

            @Override
            public Object parseObject(String source, ParsePosition pos) {
                return null;
            }
        });

        xyPlot.setDomainLabel("");
        xyPlot.setRangeLabel("Amount in Dollars");

        // Increment X-Axis by 1 value
        xyPlot.setDomainStep(XYStepMode.INCREMENT_BY_VAL, 1);

        xyPlot.getGraphWidget().setRangeLabelWidth(50);

        // Reduce the number of range labels
        xyPlot.setTicksPerRangeLabel(2);

        // Reduce the number of domain labels
        xyPlot.setTicksPerDomainLabel(2);

        // Remove all the developer guides from the chart
        xyPlot.disableAllMarkup();
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        getMenuInflater().inflate(R.menu.activity_main, menu);
        return true;
    }
}
</code></pre>
