--- a/artifacts/src/main/java/org/dive4elements/river/artifacts/model/minfo/SedimentLoad.java	Thu Sep 05 15:47:24 2013 +0200
+++ b/artifacts/src/main/java/org/dive4elements/river/artifacts/model/minfo/SedimentLoad.java	Thu Sep 05 17:15:04 2013 +0200
@@ -10,10 +10,13 @@
 
 import java.util.Date;
 import java.util.HashMap;
+import java.util.Map;
 import java.util.Set;
+import java.util.TreeMap;
 
 import org.dive4elements.river.artifacts.model.NamedObjectImpl;
 import org.dive4elements.river.artifacts.model.Range;
+import org.dive4elements.river.utils.EpsilonComparator;
 
 
 /** Gives access to Fractions (at kms). */
@@ -26,10 +29,10 @@
     protected boolean isEpoch;
     protected String unit;
 
-    protected HashMap<Double, SedimentLoadFraction> kms;
+    protected Map<Double, SedimentLoadFraction> kms;
 
     public SedimentLoad() {
-        kms = new HashMap<Double, SedimentLoadFraction>();
+        kms = new TreeMap<Double, SedimentLoadFraction>(EpsilonComparator.CMP);
     }
 
     public SedimentLoad(
@@ -88,87 +91,49 @@
     }
 
     public SedimentLoadFraction getFraction(double km) {
-        if (kms.get(km) == null) {
-            return new SedimentLoadFraction();
+        SedimentLoadFraction f = kms.get(km);
+        if (f == null) {
+            f = new SedimentLoadFraction();
+            kms.put(km, f);
         }
-        return kms.get(km);
+        return f;
     }
 
     public void setCoarse(double km, double coarse, Range range) {
-        if (kms.containsKey(km)) {
-            kms.get(km).setCoarse(coarse);
-        }
-        else {
-            SedimentLoadFraction f = new SedimentLoadFraction();
-            f.setCoarse(coarse);
-            f.setCoarseRange(range);
-            kms.put(km, f);
-        }
+        SedimentLoadFraction f = getFraction(km);
+        f.setCoarse(coarse);
+        f.setCoarseRange(range);
     }
 
     public void setFineMiddle(double km, double fine_middle, Range range) {
-        if (kms.containsKey(km)) {
-            kms.get(km).setFineMiddle(fine_middle);
-            kms.get(km).setFineMiddleRange(range);
-        }
-        else {
-            SedimentLoadFraction f = new SedimentLoadFraction();
-            f.setFineMiddle(fine_middle);
-            f.setFineMiddleRange(range);
-            kms.put(km, f);
-        }
+        SedimentLoadFraction f = getFraction(km);
+        f.setFineMiddle(fine_middle);
+        f.setFineMiddleRange(range);
     }
 
+
     public void setSand(double km, double sand, Range range) {
-        if (kms.containsKey(km)) {
-            kms.get(km).setSand(sand);
-            kms.get(km).setSandRange(range);
-        }
-        else {
-            SedimentLoadFraction f = new SedimentLoadFraction();
-            f.setSand(sand);
-            f.setSandRange(range);
-            kms.put(km, f);
-        }
+        SedimentLoadFraction f = getFraction(km);
+        f.setSand(sand);
+        f.setSandRange(range);
     }
 
     public void setSuspSand(double km, double susp_sand, Range range) {
-        if (kms.containsKey(km)) {
-            kms.get(km).setSuspSand(susp_sand);
-            kms.get(km).setSuspSandRange(range);
-        }
-        else {
-            SedimentLoadFraction f = new SedimentLoadFraction();
-            f.setSuspSand(susp_sand);
-            f.setSuspSandRange(range);
-            kms.put(km, f);
-        }
+        SedimentLoadFraction f = getFraction(km);
+        f.setSuspSand(susp_sand);
+        f.setSuspSandRange(range);
     }
 
     public void setSuspSandBed(double km, double susp_sand_bed, Range range) {
-        if (kms.containsKey(km)) {
-            kms.get(km).setSuspSandBed(susp_sand_bed);
-            kms.get(km).setSuspSandBedRange(range);
-        }
-        else {
-            SedimentLoadFraction f = new SedimentLoadFraction();
-            f.setSuspSandBed(susp_sand_bed);
-            f.setSuspSandBedRange(range);
-            kms.put(km, f);
-        }
+        SedimentLoadFraction f = getFraction(km);
+        f.setSuspSandBed(susp_sand_bed);
+        f.setSuspSandBedRange(range);
     }
 
     public void setSuspSediment(double km, double susp_sediment, Range range) {
-        if (kms.containsKey(km)) {
-            kms.get(km).setSuspSediment(susp_sediment);
-            kms.get(km).setSuspSedimentRange(range);
-        }
-        else {
-            SedimentLoadFraction f = new SedimentLoadFraction();
-            f.setSuspSediment(susp_sediment);
-            f.setSuspSedimentRange(range);
-            kms.put(km, f);
-        }
+        SedimentLoadFraction f = getFraction(km);
+        f.setSuspSediment(susp_sediment);
+        f.setSuspSedimentRange(range);
     }
 
     public void setLoadTotal(double km, double total) {
@@ -176,42 +141,21 @@
     }
 
     public void setLoadTotal(double km, double total, Range range) {
-        if (kms.containsKey(km)) {
-            kms.get(km).setLoadTotal(total);
-            kms.get(km).setLoadTotalRange(range);
-        }
-        else {
-            SedimentLoadFraction f = new SedimentLoadFraction();
-            f.setLoadTotal(total);
-            f.setLoadTotalRange(range);
-            kms.put(km, f);
-        }
+        SedimentLoadFraction f = getFraction(km);
+        f.setLoadTotal(total);
+        f.setLoadTotalRange(range);
     }
 
     public void setTotal(double km, double total, Range range) {
-        if (kms.containsKey(km)) {
-            kms.get(km).setTotal(total);
-            kms.get(km).setTotalRange(range);
-        }
-        else {
-            SedimentLoadFraction f = new SedimentLoadFraction();
-            f.setTotal(total);
-            f.setTotalRange(range);
-            kms.put(km, f);
-        }
+        SedimentLoadFraction f = getFraction(km);
+        f.setTotal(total);
+        f.setTotalRange(range);
     }
 
     public void setUnknown(double km, double unknown, Range range) {
-        if (kms.containsKey(km)) {
-            kms.get(km).setUnknown(unknown);
-            kms.get(km).setUnknownRange(range);
-        }
-        else {
-            SedimentLoadFraction f = new SedimentLoadFraction();
-            f.setUnknown(unknown);
-            f.setUnknownRange(range);
-            kms.put(km, f);
-        }
+        SedimentLoadFraction f = getFraction(km);
+        f.setUnknown(unknown);
+        f.setUnknownRange(range);
     }
 
     public String getUnit() {