--- a/artifacts/src/main/java/org/dive4elements/river/exports/ChartGenerator2.java	Wed Feb 14 19:06:21 2018 +0100
+++ b/artifacts/src/main/java/org/dive4elements/river/exports/ChartGenerator2.java	Thu Feb 15 13:46:35 2018 +0100
@@ -22,6 +22,7 @@
 import java.io.OutputStream;
 import java.text.NumberFormat;
 import java.util.ArrayList;
+import java.util.HashMap;
 import java.util.List;
 import java.util.Locale;
 import java.util.Map;
@@ -139,6 +140,8 @@
 
     protected String outName;
 
+    private Map<String, IdentifiableNumberAxis> axisNameToAxis = new HashMap<>();
+
     /**
      * Default constructor that initializes internal data structures.
      */
@@ -1479,8 +1482,7 @@
 
         String axisName = axisIndexToName(index);
 
-        IdentifiableNumberAxis axis = new IdentifiableNumberAxis(
-            axisName, getYAxisLabel(axisName));
+        IdentifiableNumberAxis axis = new IdentifiableNumberAxis(axisName, getYAxisLabel(axisName));
 
         axis.setAutoRangeIncludesZero(false);
         axis.setLabelFont(labelFont);
@@ -1489,6 +1491,9 @@
         axis.setLowerMargin(0);
         axis.setUpperMargin(0);
 
+        /* remember axis for lookup */
+        axisNameToAxis.put( axisName, axis );
+        
         return axis;
     }
 
@@ -1599,4 +1604,8 @@
     public CallContext getCallContext() {
         return context;
     }
-}
+    
+    public final IdentifiableNumberAxis getAxis(final String axisName) {
+        return axisNameToAxis.get(axisName);
+    }
+}
\ No newline at end of file