--- a/gnv-artifacts/src/main/java/de/intevation/gnv/artifacts/context/GNVArtifactContextFactory.java	Fri Jan 29 13:28:28 2010 +0000
+++ b/gnv-artifacts/src/main/java/de/intevation/gnv/artifacts/context/GNVArtifactContextFactory.java	Sun Jan 31 21:50:15 2010 +0000
@@ -1,6 +1,3 @@
-/**
- *
- */
 package de.intevation.gnv.artifacts.context;
 
 import java.awt.Color;
@@ -81,6 +78,9 @@
     public final static String HORIZONTAL_CROSS_SECTION_SAMPLES =
         "/artifact-database/gnv/horizontal-cross-section/samples/@number";
     
+    public final static String HORIZONTAL_CROSS_SECTION_EXTRAPOLATION_ROUNDS =
+        "/artifact-database/gnv/horizontal-cross-section/extrapolation/@rounds";
+    
     public final static String HORIZONTAL_CROSS_SECTION_RESULT_SHAPEFILE_PATH =
         "/artifact-database/gnv/horizontal-cross-section/result-shapefile-directory/@path";
     
@@ -364,10 +364,47 @@
         log.info("configuration of horizontal cross section");
 
         configureHorizontalCrossSectionSamples(config, context);
+        configureHorizontalCrossSectionExtrapolation(config, context);
         configureHorizontalCrossSectionResultShapeFilePath(config, context);
         configureHorizontalCrossSectionGroundInterpolation(config, context);
     }
 
+    protected void configureHorizontalCrossSectionExtrapolation(
+        Document           config,
+        GNVArtifactContext context
+    )
+    {
+        log.info(
+            "configuration of horizontal cross section extrapolation");
+
+        String extrapolationRoundsValue = Config.getStringXPath(
+            config,
+            HORIZONTAL_CROSS_SECTION_EXTRAPOLATION_ROUNDS);
+
+        Integer extrapolationRounds =
+            GNVArtifactContext.DEFAULT_HORIZONTAL_CROSS_SECTION_EXTRAPOLATION_ROUNDS;
+
+        if (extrapolationRoundsValue != null
+        && (extrapolationRoundsValue = extrapolationRoundsValue.trim()).length() > 0
+        ) {
+            try {
+                extrapolationRounds =
+                    Integer.valueOf(extrapolationRoundsValue);
+            }
+            catch (NumberFormatException nfe) {
+                log.error(
+                    "'" + extrapolationRoundsValue + "' is not a valid integer");
+            }
+        }
+
+        log.info("extrapolation rounds: " + extrapolationRounds);
+
+        context.put(
+            GNVArtifactContext
+                .HORIZONTAL_CROSS_SECTION_EXTRAPOLATION_ROUNDS_KEY,
+            extrapolationRounds);
+    }
+
     protected void configureHorizontalCrossSectionGroundInterpolation(
         Document           config,
         GNVArtifactContext context