enhancement for short charts - more ticks on y axis

xchart-examples/src/main/java/com/xeiam/xchart/demo/XChartDemo.java

@@ -122,7 +122,7 @@ public class XChartDemo extends JPanel implements TreeSelectionListener {
     category = new DefaultMutableTreeNode("Line Charts");
     top.add(category);
 
-    chart = new DefaultMutableTreeNode(new ChartInfo("Example10 - Scientific notation formatting", new Example10().getChart()));
+    chart = new DefaultMutableTreeNode(new ChartInfo("Example10 - Manual Data", new Example10().getChart()));
     category.add(chart);
 
     chart = new DefaultMutableTreeNode(new ChartInfo("Example2 - Customized series style", new Example2().getChart()));

xchart/src/main/java/com/xeiam/xchart/internal/chartpart/AxisTick.java

@@ -188,6 +188,10 @@ public class AxisTick implements IChartPart, IHideable {
     // System.out.println(axis.min);
     // System.out.println(length);
     int tickMarkSpaceHint = (axis.direction == Direction.X ? DEFAULT_TICK_MARK_STEP_HINT_X : DEFAULT_TICK_MARK_STEP_HINT_Y);
+    // for very short plots, squeeze some more ticks in than normal
+    if (axis.direction == Direction.Y && tickSpace < 160) {
+      tickMarkSpaceHint = 25;
+    }
     double gridStepHint = length / tickSpace * tickMarkSpaceHint;
 
     // gridStepHint --> mantissa * 10 ** exponent