--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/artifacts/src/main/java/org/dive4elements/river/jfree/GapInserter.java	Mon May 26 12:40:19 2014 +0200
@@ -0,0 +1,27 @@
+package org.dive4elements.river.jfree;
+
+import org.jfree.data.xy.XYSeries;
+
+public class GapInserter {
+
+    private XYSeries series;
+    private double   gap;
+    private double   lastX;
+
+    public GapInserter() {
+    }
+
+    public GapInserter(XYSeries series, double gap) {
+        lastX = Double.NaN;
+        this.series = series;
+        this.gap = Math.abs(gap);
+    }
+
+    public void add(double x, double y) {
+        if (!Double.isNaN(lastX) && !Double.isNaN(x) && Math.abs(x - lastX) > gap) {
+            series.add((x + lastX)/2.0, Double.NaN, false);
+        }
+        series.add(x, y, false);
+        lastX = x;
+    }
+}