--- /dev/null
+
+// Copyright (c) 2010 Anthony Towns
+// GPL v2 or later
+
+package altosui;
+
+import java.io.*;
+
+import org.jfree.chart.JFreeChart;
+import org.jfree.chart.ChartUtilities;
+
+abstract class AltosGraph {
+ public String filename;
+ public abstract void addData(AltosDataPoint d);
+ public abstract JFreeChart createChart();
+ public void toPNG() throws java.io.IOException { toPNG(300, 500); }
+ public void toPNG(int width, int height)
+ throws java.io.IOException
+ {
+ File pngout = new File(filename);
+ JFreeChart chart = createChart();
+ ChartUtilities.saveChartAsPNG(pngout, chart, width, height);
+ System.out.println("Created " + filename);
+ }
+}