--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/flys-artifacts/src/main/java/de/intevation/flys/artifacts/model/WQ.java	Fri Sep 28 12:14:56 2012 +0200
@@ -0,0 +1,172 @@
+package de.intevation.flys.artifacts.model;
+
+import de.intevation.flys.utils.DataUtil;
+
+import gnu.trove.TDoubleArrayList;
+
+import org.apache.log4j.Logger;
+
+public class WQ
+extends      NamedObjectImpl
+{
+    private static Logger logger = Logger.getLogger(WQ.class);
+
+    // TODO: s/w/ws/g
+    protected TDoubleArrayList w;
+
+    // TODO: s/q/qs/g
+    protected TDoubleArrayList q;
+
+    public WQ() {
+        this("");
+    }
+
+    public WQ(String name) {
+        w = new TDoubleArrayList();
+        q = new TDoubleArrayList();
+    }
+
+    public WQ(int capacity) {
+        this(capacity, "");
+    }
+
+
+    public WQ(int capacity, String name) {
+        super(name);
+        w = new TDoubleArrayList(capacity);
+        q = new TDoubleArrayList(capacity);
+    }
+
+    public WQ(double [] qs, double [] ws) {
+        this(qs, ws, "");
+    }
+
+    public WQ(double [] qs, double [] ws, String name) {
+        super(name);
+        w = new TDoubleArrayList(ws);
+        q = new TDoubleArrayList(qs);
+    }
+
+    public void add(double w, double q) {
+        this.w.add(w);
+        this.q.add(q);
+    }
+
+    public int size() {
+        return w.size();
+    }
+
+    public double getW(int idx) {
+        return w.getQuick(idx);
+    }
+
+    public double getQ(int idx) {
+        return q.getQuick(idx);
+    }
+
+    public double [] get(int idx) {
+        return get(idx, new double [2]);
+    }
+
+    public double [] get(int idx, double [] dst) {
+        dst[0] = w.getQuick(idx);
+        dst[1] = q.getQuick(idx);
+        return dst;
+    }
+
+    public double [] getWs() {
+        return w.toNativeArray();
+    }
+
+    public double [] getQs() {
+        return q.toNativeArray();
+    }
+
+    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);
+            }
+        }
+    }
+
+    public void removeNaNs() {
+        removeNaNs(new TDoubleArrayList [] { w, q });
+    }
+
+    public boolean guessWaterIncreasing() {
+        return guessWaterIncreasing(0.05f);
+    }
+
+    public boolean guessWaterIncreasing(float factor) {
+        return DataUtil.guessWaterIncreasing(w, factor);
+    }
+
+    public int [] longestIncreasingWRangeIndices() {
+        return longestIncreasingWRangeIndices(new int[2]);
+    }
+
+    public int [] longestIncreasingWRangeIndices(int [] bounds) {
+
+        int N = size();
+        int start = 0;
+        int stop  = 0;
+
+        double lastW = Double.MAX_VALUE;
+
+        for (int i = 0; i < N; ++i) {
+            double v = w.getQuick(i);
+            if (v <= lastW) {
+                if (stop-start > bounds[1]-bounds[0]) {
+                    bounds[0] = start;
+                    bounds[1] = stop;
+                    if (logger.isDebugEnabled()) {
+                        logger.debug("new range: " +
+                            bounds[0] + " - " + bounds[1] + " (" +
+                            w.getQuick(bounds[0]) + ", " +
+                            w.getQuick(bounds[1]) + ")");
+
+                    }
+                }
+                start = stop = i;
+            }
+            else {
+                stop = i;
+            }
+            lastW = v;
+        }
+
+        if (stop-start > bounds[1]-bounds[0]) {
+            bounds[0] = start;
+            bounds[1] = stop;
+            if (logger.isDebugEnabled()) {
+                logger.debug("new range @end: " +
+                    bounds[0] + " - " + bounds[1] + " (" +
+                    w.getQuick(bounds[0]) + ", " +
+                    w.getQuick(bounds[1]) + ")");
+
+            }
+        }
+
+        return bounds;
+    }
+}
+// vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :