import java.util.ArrayList;
import java.awt.*;
-import java.awt.event.*;
import javax.swing.*;
-import javax.swing.filechooser.FileNameExtensionFilter;
-import javax.swing.table.*;
import org.altusmetrum.AltosLib.*;
import org.jfree.chart.ChartPanel;
-import org.jfree.chart.ChartUtilities;
import org.jfree.chart.JFreeChart;
-import org.jfree.chart.axis.AxisLocation;
-import org.jfree.ui.ApplicationFrame;
import org.jfree.ui.RefineryUtilities;
public class AltosGraphUI extends AltosFrame