Mercurial > dive4elements > river

annotate flys-artifacts/src/main/java/de/intevation/flys/artifacts/math/MovingAverage.java @ 5622:b28a6d05e969

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Add a new mechanism in mapfish print call to add arbitary data maps Data properties are identified by starting with mapfish-data and they are then split in info value pairs where info can be the description of the information and value the value of the information to be transported in the data map.
author Andre Heinecke <aheinecke@intevation.de>
date Tue, 09 Apr 2013 19:04:32 +0200
parents d35d316049e8
children fb9892036bd6
rev   line source
4630
63368dcc3f94 Moved MovingAverage into math package
Sascha L. Teichmann <teichmann@intevation.de>
parents: 4625
diff changeset
1 package de.intevation.flys.artifacts.math;
4625
d6d16b5ab2f0 New class for average calculation implementing moving average algorithms.
Raimund Renkert <rrenkert@intevation.de>
parents:
diff changeset
2
d6d16b5ab2f0 New class for average calculation implementing moving average algorithms.
Raimund Renkert <rrenkert@intevation.de>
parents:
diff changeset
3 import java.util.Map;
d6d16b5ab2f0 New class for average calculation implementing moving average algorithms.
Raimund Renkert <rrenkert@intevation.de>
parents:
diff changeset
4 import java.util.SortedMap;
d6d16b5ab2f0 New class for average calculation implementing moving average algorithms.
Raimund Renkert <rrenkert@intevation.de>
parents:
diff changeset
5 import java.util.TreeMap;
d6d16b5ab2f0 New class for average calculation implementing moving average algorithms.
Raimund Renkert <rrenkert@intevation.de>
parents:
diff changeset
6
d6d16b5ab2f0 New class for average calculation implementing moving average algorithms.
Raimund Renkert <rrenkert@intevation.de>
parents:
diff changeset
7
d6d16b5ab2f0 New class for average calculation implementing moving average algorithms.
Raimund Renkert <rrenkert@intevation.de>
parents:
diff changeset
8 public class MovingAverage
d6d16b5ab2f0 New class for average calculation implementing moving average algorithms.
Raimund Renkert <rrenkert@intevation.de>
parents:
diff changeset
9 {
d6d16b5ab2f0 New class for average calculation implementing moving average algorithms.
Raimund Renkert <rrenkert@intevation.de>
parents:
diff changeset
10
d6d16b5ab2f0 New class for average calculation implementing moving average algorithms.
Raimund Renkert <rrenkert@intevation.de>
parents:
diff changeset
11 public static double[][] simple(double[][] values, double radius) {
d6d16b5ab2f0 New class for average calculation implementing moving average algorithms.
Raimund Renkert <rrenkert@intevation.de>
parents:
diff changeset
12 TreeMap<Double, Double> map = toMap(values);
4631
d35d316049e8 A little optimization and handle the case that there are duplicates in the values.
Sascha L. Teichmann <teichmann@intevation.de>
parents: 4630
diff changeset
13 int N = map.size();
d35d316049e8 A little optimization and handle the case that there are duplicates in the values.
Sascha L. Teichmann <teichmann@intevation.de>
parents: 4630
diff changeset
14 double [] xs = new double[N];
d35d316049e8 A little optimization and handle the case that there are duplicates in the values.
Sascha L. Teichmann <teichmann@intevation.de>
parents: 4630
diff changeset
15 double [] ys = new double[N];
4625
d6d16b5ab2f0 New class for average calculation implementing moving average algorithms.
Raimund Renkert <rrenkert@intevation.de>
parents:
diff changeset
16 int ndx = 0;
d6d16b5ab2f0 New class for average calculation implementing moving average algorithms.
Raimund Renkert <rrenkert@intevation.de>
parents:
diff changeset
17 for (double x: map.keySet()) {
d6d16b5ab2f0 New class for average calculation implementing moving average algorithms.
Raimund Renkert <rrenkert@intevation.de>
parents:
diff changeset
18 SortedMap<Double, Double> range =
d6d16b5ab2f0 New class for average calculation implementing moving average algorithms.
Raimund Renkert <rrenkert@intevation.de>
parents:
diff changeset
19 map.subMap(x-radius, true, x+radius, true);
d6d16b5ab2f0 New class for average calculation implementing moving average algorithms.
Raimund Renkert <rrenkert@intevation.de>
parents:
diff changeset
20 double avg = 0d;
4631
d35d316049e8 A little optimization and handle the case that there are duplicates in the values.
Sascha L. Teichmann <teichmann@intevation.de>
parents: 4630
diff changeset
21 for (double v: range.values()) {
4625
d6d16b5ab2f0 New class for average calculation implementing moving average algorithms.
Raimund Renkert <rrenkert@intevation.de>
parents:
diff changeset
22 avg += v;
d6d16b5ab2f0 New class for average calculation implementing moving average algorithms.
Raimund Renkert <rrenkert@intevation.de>
parents:
diff changeset
23 }
d6d16b5ab2f0 New class for average calculation implementing moving average algorithms.
Raimund Renkert <rrenkert@intevation.de>
parents:
diff changeset
24 avg /= range.size();
4631
d35d316049e8 A little optimization and handle the case that there are duplicates in the values.
Sascha L. Teichmann <teichmann@intevation.de>
parents: 4630
diff changeset
25 xs[ndx] = x;
d35d316049e8 A little optimization and handle the case that there are duplicates in the values.
Sascha L. Teichmann <teichmann@intevation.de>
parents: 4630
diff changeset
26 ys[ndx] = avg;
4625
d6d16b5ab2f0 New class for average calculation implementing moving average algorithms.
Raimund Renkert <rrenkert@intevation.de>
parents:
diff changeset
27 ndx++;
d6d16b5ab2f0 New class for average calculation implementing moving average algorithms.
Raimund Renkert <rrenkert@intevation.de>
parents:
diff changeset
28 }
4631
d35d316049e8 A little optimization and handle the case that there are duplicates in the values.
Sascha L. Teichmann <teichmann@intevation.de>
parents: 4630
diff changeset
29 return new double [][] { xs, ys };
4625
d6d16b5ab2f0 New class for average calculation implementing moving average algorithms.
Raimund Renkert <rrenkert@intevation.de>
parents:
diff changeset
30 }
d6d16b5ab2f0 New class for average calculation implementing moving average algorithms.
Raimund Renkert <rrenkert@intevation.de>
parents:
diff changeset
31
d6d16b5ab2f0 New class for average calculation implementing moving average algorithms.
Raimund Renkert <rrenkert@intevation.de>
parents:
diff changeset
32 public static double[][] weighted(double[][] values, double radius) {
d6d16b5ab2f0 New class for average calculation implementing moving average algorithms.
Raimund Renkert <rrenkert@intevation.de>
parents:
diff changeset
33 TreeMap<Double, Double> map = toMap(values);
4631
d35d316049e8 A little optimization and handle the case that there are duplicates in the values.
Sascha L. Teichmann <teichmann@intevation.de>
parents: 4630
diff changeset
34 int N = map.size();
d35d316049e8 A little optimization and handle the case that there are duplicates in the values.
Sascha L. Teichmann <teichmann@intevation.de>
parents: 4630
diff changeset
35 double [] xs = new double[N];
d35d316049e8 A little optimization and handle the case that there are duplicates in the values.
Sascha L. Teichmann <teichmann@intevation.de>
parents: 4630
diff changeset
36 double [] ys = new double[N];
4625
d6d16b5ab2f0 New class for average calculation implementing moving average algorithms.
Raimund Renkert <rrenkert@intevation.de>
parents:
diff changeset
37 int ndx = 0;
4631
d35d316049e8 A little optimization and handle the case that there are duplicates in the values.
Sascha L. Teichmann <teichmann@intevation.de>
parents: 4630
diff changeset
38 double _1radius = 1d/radius;
4625
d6d16b5ab2f0 New class for average calculation implementing moving average algorithms.
Raimund Renkert <rrenkert@intevation.de>
parents:
diff changeset
39 for (double x: map.keySet()) {
d6d16b5ab2f0 New class for average calculation implementing moving average algorithms.
Raimund Renkert <rrenkert@intevation.de>
parents:
diff changeset
40 double avg = 0d;
d6d16b5ab2f0 New class for average calculation implementing moving average algorithms.
Raimund Renkert <rrenkert@intevation.de>
parents:
diff changeset
41 double weights = 0d;
d6d16b5ab2f0 New class for average calculation implementing moving average algorithms.
Raimund Renkert <rrenkert@intevation.de>
parents:
diff changeset
42 for (Map.Entry<Double, Double> e:
d6d16b5ab2f0 New class for average calculation implementing moving average algorithms.
Raimund Renkert <rrenkert@intevation.de>
parents:
diff changeset
43 map.subMap(x-radius, false, x+radius, false).entrySet()
d6d16b5ab2f0 New class for average calculation implementing moving average algorithms.
Raimund Renkert <rrenkert@intevation.de>
parents:
diff changeset
44 ) {
4631
d35d316049e8 A little optimization and handle the case that there are duplicates in the values.
Sascha L. Teichmann <teichmann@intevation.de>
parents: 4630
diff changeset
45 double weight = 1d - Math.abs(x - e.getKey())*_1radius;
4625
d6d16b5ab2f0 New class for average calculation implementing moving average algorithms.
Raimund Renkert <rrenkert@intevation.de>
parents:
diff changeset
46 avg += weight*e.getValue();
d6d16b5ab2f0 New class for average calculation implementing moving average algorithms.
Raimund Renkert <rrenkert@intevation.de>
parents:
diff changeset
47 weights += weight;
d6d16b5ab2f0 New class for average calculation implementing moving average algorithms.
Raimund Renkert <rrenkert@intevation.de>
parents:
diff changeset
48 }
d6d16b5ab2f0 New class for average calculation implementing moving average algorithms.
Raimund Renkert <rrenkert@intevation.de>
parents:
diff changeset
49 avg /= weights;
4631
d35d316049e8 A little optimization and handle the case that there are duplicates in the values.
Sascha L. Teichmann <teichmann@intevation.de>
parents: 4630
diff changeset
50 xs[ndx] = x;
d35d316049e8 A little optimization and handle the case that there are duplicates in the values.
Sascha L. Teichmann <teichmann@intevation.de>
parents: 4630
diff changeset
51 ys[ndx] = avg;
4625
d6d16b5ab2f0 New class for average calculation implementing moving average algorithms.
Raimund Renkert <rrenkert@intevation.de>
parents:
diff changeset
52 ndx++;
d6d16b5ab2f0 New class for average calculation implementing moving average algorithms.
Raimund Renkert <rrenkert@intevation.de>
parents:
diff changeset
53 }
4631
d35d316049e8 A little optimization and handle the case that there are duplicates in the values.
Sascha L. Teichmann <teichmann@intevation.de>
parents: 4630
diff changeset
54 return new double [][] { xs, ys };
4625
d6d16b5ab2f0 New class for average calculation implementing moving average algorithms.
Raimund Renkert <rrenkert@intevation.de>
parents:
diff changeset
55 }
d6d16b5ab2f0 New class for average calculation implementing moving average algorithms.
Raimund Renkert <rrenkert@intevation.de>
parents:
diff changeset
56
d6d16b5ab2f0 New class for average calculation implementing moving average algorithms.
Raimund Renkert <rrenkert@intevation.de>
parents:
diff changeset
57 private static TreeMap<Double, Double> toMap(double[][] values) {
d6d16b5ab2f0 New class for average calculation implementing moving average algorithms.
Raimund Renkert <rrenkert@intevation.de>
parents:
diff changeset
58 TreeMap<Double, Double> map = new TreeMap<Double, Double>();
4631
d35d316049e8 A little optimization and handle the case that there are duplicates in the values.
Sascha L. Teichmann <teichmann@intevation.de>
parents: 4630
diff changeset
59 double [] xs = values[0];
d35d316049e8 A little optimization and handle the case that there are duplicates in the values.
Sascha L. Teichmann <teichmann@intevation.de>
parents: 4630
diff changeset
60 double [] ys = values[1];
d35d316049e8 A little optimization and handle the case that there are duplicates in the values.
Sascha L. Teichmann <teichmann@intevation.de>
parents: 4630
diff changeset
61 for (int i = 0; i < xs.length; i++) {
d35d316049e8 A little optimization and handle the case that there are duplicates in the values.
Sascha L. Teichmann <teichmann@intevation.de>
parents: 4630
diff changeset
62 map.put(xs[i], ys[i]);
4625
d6d16b5ab2f0 New class for average calculation implementing moving average algorithms.
Raimund Renkert <rrenkert@intevation.de>
parents:
diff changeset
63 }
d6d16b5ab2f0 New class for average calculation implementing moving average algorithms.
Raimund Renkert <rrenkert@intevation.de>
parents:
diff changeset
64 return map;
d6d16b5ab2f0 New class for average calculation implementing moving average algorithms.
Raimund Renkert <rrenkert@intevation.de>
parents:
diff changeset
65 }
d6d16b5ab2f0 New class for average calculation implementing moving average algorithms.
Raimund Renkert <rrenkert@intevation.de>
parents:
diff changeset
66 }
http://dive4elements.wald.intevation.org