--- a/flys-artifacts/src/main/java/de/intevation/flys/exports/WDifferencesCurveGenerator.java	Thu Nov 24 10:59:40 2011 +0000
+++ b/flys-artifacts/src/main/java/de/intevation/flys/exports/WDifferencesCurveGenerator.java	Thu Nov 24 11:03:33 2011 +0000
@@ -2,6 +2,8 @@
 
 import org.apache.log4j.Logger;
 
+import java.awt.Font;
+
 import org.jfree.chart.title.TextTitle;
 
 import org.jfree.chart.JFreeChart;
@@ -34,6 +36,16 @@
 extends      LongitudinalSectionGenerator
 implements   FacetTypes
 {
+    public static enum YAXIS {
+        D(0),
+        W(1),
+        Q(2);
+        protected int idx;
+        private YAXIS(int c) {
+           idx = c;
+        }
+    }
+
     /** The logger that is used in this generator. */
     private static Logger logger =
         Logger.getLogger(WDifferencesCurveGenerator.class);
@@ -190,7 +202,7 @@
         // Note: the only difference in the super-implementation
         //  (in LongitudinalSectionGenerator) is here (adds with
         //  addFirstAxisSeries() .
-        addAxisSeries(series, 3, visible);
+        addAxisSeries(series, YAXIS.W.idx, visible);
 
         if (wkms instanceof WQKms) {
             if (needInvertAxis((WQKms) wkms)) {
@@ -246,7 +258,7 @@
 
         StyledSeriesBuilder.addPoints(series, wkms);
 
-        addAxisSeries(series, 0, visible);
+        addAxisSeries(series, YAXIS.D.idx, visible);
         if (DataUtil.guessWaterIncreasing(wkms.allWs())) {
             setInverted(true);
         }