--- a/flys-artifacts/src/main/java/de/intevation/flys/utils/DoubleUtil.java	Wed Jan 23 11:14:41 2013 +0100
+++ b/flys-artifacts/src/main/java/de/intevation/flys/utils/DoubleUtil.java	Wed Jan 23 11:15:35 2013 +0100
@@ -209,5 +209,31 @@
         }
         return max;
     }
+
+    public static void removeNaNs(TDoubleArrayList [] arrays) {
+
+        int dest = 0;
+
+        int A = arrays.length;
+        int N = arrays[0].size();
+
+        OUTER: for (int i = 0; i < N; ++i) {
+            for (int j = 0; j < A; ++j) {
+                TDoubleArrayList a = arrays[j];
+                double v = a.getQuick(i);
+                if (Double.isNaN(v)) {
+                    continue OUTER;
+                }
+                a.setQuick(dest, v);
+            }
+            ++dest;
+        }
+
+        if (dest < N) {
+            for (int i = 0; i < A; ++i) {
+                arrays[i].remove(dest, N-dest);
+            }
+        }
+    }
 }
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