--- a/artifacts/doc/conf/generators/discharge-diagram-defaults.xml	Fri Sep 05 15:57:39 2014 +0200
+++ b/artifacts/doc/conf/generators/discharge-diagram-defaults.xml	Fri Sep 05 16:54:45 2014 +0200
@@ -11,4 +11,5 @@
     <processor class="org.dive4elements.river.exports.process.ComputedDischargeProcessor" axis="W"/>
     <processor class="org.dive4elements.river.exports.process.HistoricalDischargeProcessor" axis="W"/>
     <processor class="org.dive4elements.river.exports.process.FixWQProcessor" axis="W"/>
+    <processor class="org.dive4elements.river.exports.process.FixDerivedProcessor" axis="W"/>
 </discharge-defaults>

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/artifacts/src/main/java/org/dive4elements/river/exports/process/FixDerivedProcessor.java	Fri Sep 05 16:54:45 2014 +0200
@@ -0,0 +1,58 @@
+package org.dive4elements.river.exports.process;
+
+import org.apache.log4j.Logger;
+import org.dive4elements.artifactdatabase.state.ArtifactAndFacet;
+import org.dive4elements.river.artifacts.model.FacetTypes;
+import org.dive4elements.river.artifacts.model.fixings.FixDerivateFacet;
+import org.dive4elements.river.artifacts.model.fixings.FixFunction;
+import org.dive4elements.river.exports.DiagramGenerator;
+import org.dive4elements.river.jfree.JFreeUtil;
+import org.dive4elements.river.jfree.StyledXYSeries;
+import org.dive4elements.river.themes.ThemeDocument;
+
+
+public class FixDerivedProcessor
+extends DefaultProcessor
+implements FacetTypes
+{
+
+    private static Logger log = Logger.getLogger(FixDerivedProcessor.class);
+
+    public FixDerivedProcessor() {
+    }
+
+    @Override
+    public void doOut(
+        DiagramGenerator generator,
+        ArtifactAndFacet bundle,
+        ThemeDocument theme,
+        boolean visible
+    ) {
+        FixDerivateFacet facet = (FixDerivateFacet)bundle.getFacet();
+        FixFunction func = (FixFunction)facet.getData(
+                bundle.getArtifact(), generator.getCallContext());
+
+        if (func == null) {
+            log.warn("doOut: Facet does not contain FixFunction");
+            return;
+        }
+
+        double maxQ = func.getMaxQ();
+
+        if (maxQ > 0) {
+            StyledXYSeries series = JFreeUtil.sampleFunction2D(
+                    func.getFunction(),
+                    theme,
+                    bundle.getFacetDescription(),
+                    500,   // number of samples
+                    0.0 ,  // start
+                    maxQ); // end
+            generator.addAxisSeries(series, axisName, visible);
+        }
+    }
+
+    @Override
+    public boolean canHandle(String facettype) {
+        return FIX_DERIVATE_CURVE.equals(facettype);
+    }
+}