Mercurial > dive4elements > river

annotate flys-artifacts/src/main/java/de/intevation/flys/artifacts/math/LinearRemap.java @ 427:909196be11a0

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
First step to calculate "W fuer ungleichwertige Abfluesse" correctly. flys/issue55 flys-artifacts/trunk@1925 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Sascha L. Teichmann <sascha.teichmann@intevation.de>
date Sun, 15 May 2011 21:08:41 +0000
parents
children 343f248e4c8c
rev   line source
427
909196be11a0 First step to calculate "W fuer ungleichwertige Abfluesse" correctly. flys/issue55
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
1 package de.intevation.flys.artifacts.math;
909196be11a0 First step to calculate "W fuer ungleichwertige Abfluesse" correctly. flys/issue55
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
2
909196be11a0 First step to calculate "W fuer ungleichwertige Abfluesse" correctly. flys/issue55
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
3 public class LinearRemap
909196be11a0 First step to calculate "W fuer ungleichwertige Abfluesse" correctly. flys/issue55
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
4 {
909196be11a0 First step to calculate "W fuer ungleichwertige Abfluesse" correctly. flys/issue55
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
5 public static class Segment {
909196be11a0 First step to calculate "W fuer ungleichwertige Abfluesse" correctly. flys/issue55
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
6
909196be11a0 First step to calculate "W fuer ungleichwertige Abfluesse" correctly. flys/issue55
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
7 protected Segment next;
909196be11a0 First step to calculate "W fuer ungleichwertige Abfluesse" correctly. flys/issue55
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
8
909196be11a0 First step to calculate "W fuer ungleichwertige Abfluesse" correctly. flys/issue55
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
9 protected double from;
909196be11a0 First step to calculate "W fuer ungleichwertige Abfluesse" correctly. flys/issue55
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
10 protected double to;
909196be11a0 First step to calculate "W fuer ungleichwertige Abfluesse" correctly. flys/issue55
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
11
909196be11a0 First step to calculate "W fuer ungleichwertige Abfluesse" correctly. flys/issue55
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
12 protected double m;
909196be11a0 First step to calculate "W fuer ungleichwertige Abfluesse" correctly. flys/issue55
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
13 protected double b;
909196be11a0 First step to calculate "W fuer ungleichwertige Abfluesse" correctly. flys/issue55
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
14
909196be11a0 First step to calculate "W fuer ungleichwertige Abfluesse" correctly. flys/issue55
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
15 public Segment() {
909196be11a0 First step to calculate "W fuer ungleichwertige Abfluesse" correctly. flys/issue55
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
16 }
909196be11a0 First step to calculate "W fuer ungleichwertige Abfluesse" correctly. flys/issue55
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
17
909196be11a0 First step to calculate "W fuer ungleichwertige Abfluesse" correctly. flys/issue55
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
18 public Segment(
909196be11a0 First step to calculate "W fuer ungleichwertige Abfluesse" correctly. flys/issue55
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
19 double from, double to,
909196be11a0 First step to calculate "W fuer ungleichwertige Abfluesse" correctly. flys/issue55
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
20 double m, double b,
909196be11a0 First step to calculate "W fuer ungleichwertige Abfluesse" correctly. flys/issue55
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
21 Segment next
909196be11a0 First step to calculate "W fuer ungleichwertige Abfluesse" correctly. flys/issue55
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
22 ) {
909196be11a0 First step to calculate "W fuer ungleichwertige Abfluesse" correctly. flys/issue55
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
23 this.from = from;
909196be11a0 First step to calculate "W fuer ungleichwertige Abfluesse" correctly. flys/issue55
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
24 this.to = to;
909196be11a0 First step to calculate "W fuer ungleichwertige Abfluesse" correctly. flys/issue55
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
25 this.m = m;
909196be11a0 First step to calculate "W fuer ungleichwertige Abfluesse" correctly. flys/issue55
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
26 this.b = b;
909196be11a0 First step to calculate "W fuer ungleichwertige Abfluesse" correctly. flys/issue55
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
27 }
909196be11a0 First step to calculate "W fuer ungleichwertige Abfluesse" correctly. flys/issue55
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
28
909196be11a0 First step to calculate "W fuer ungleichwertige Abfluesse" correctly. flys/issue55
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
29 public double eval(double x) {
909196be11a0 First step to calculate "W fuer ungleichwertige Abfluesse" correctly. flys/issue55
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
30 return m*x + b;
909196be11a0 First step to calculate "W fuer ungleichwertige Abfluesse" correctly. flys/issue55
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
31 }
909196be11a0 First step to calculate "W fuer ungleichwertige Abfluesse" correctly. flys/issue55
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
32 } // class Segment
909196be11a0 First step to calculate "W fuer ungleichwertige Abfluesse" correctly. flys/issue55
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
33
909196be11a0 First step to calculate "W fuer ungleichwertige Abfluesse" correctly. flys/issue55
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
34 protected Segment head;
909196be11a0 First step to calculate "W fuer ungleichwertige Abfluesse" correctly. flys/issue55
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
35
909196be11a0 First step to calculate "W fuer ungleichwertige Abfluesse" correctly. flys/issue55
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
36 public LinearRemap() {
909196be11a0 First step to calculate "W fuer ungleichwertige Abfluesse" correctly. flys/issue55
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
37 }
909196be11a0 First step to calculate "W fuer ungleichwertige Abfluesse" correctly. flys/issue55
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
38
909196be11a0 First step to calculate "W fuer ungleichwertige Abfluesse" correctly. flys/issue55
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
39 public void add(
909196be11a0 First step to calculate "W fuer ungleichwertige Abfluesse" correctly. flys/issue55
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
40 double from, double to,
909196be11a0 First step to calculate "W fuer ungleichwertige Abfluesse" correctly. flys/issue55
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
41 double x1, double y1,
909196be11a0 First step to calculate "W fuer ungleichwertige Abfluesse" correctly. flys/issue55
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
42 double x2, double y2
909196be11a0 First step to calculate "W fuer ungleichwertige Abfluesse" correctly. flys/issue55
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
43 ) {
909196be11a0 First step to calculate "W fuer ungleichwertige Abfluesse" correctly. flys/issue55
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
44 // y1 = m*x1 + b <=> b = y1 - m*x1
909196be11a0 First step to calculate "W fuer ungleichwertige Abfluesse" correctly. flys/issue55
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
45 // y2 = m*x2 + b
909196be11a0 First step to calculate "W fuer ungleichwertige Abfluesse" correctly. flys/issue55
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
46 // y2 - y1 = m*(x2 - x1)
909196be11a0 First step to calculate "W fuer ungleichwertige Abfluesse" correctly. flys/issue55
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
47 // m = (y2 - y1)/(x2 - x1)
909196be11a0 First step to calculate "W fuer ungleichwertige Abfluesse" correctly. flys/issue55
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
48
909196be11a0 First step to calculate "W fuer ungleichwertige Abfluesse" correctly. flys/issue55
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
49 double m, b;
909196be11a0 First step to calculate "W fuer ungleichwertige Abfluesse" correctly. flys/issue55
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
50
909196be11a0 First step to calculate "W fuer ungleichwertige Abfluesse" correctly. flys/issue55
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
51 if (x2 == x1) {
909196be11a0 First step to calculate "W fuer ungleichwertige Abfluesse" correctly. flys/issue55
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
52 m = 0.0;
909196be11a0 First step to calculate "W fuer ungleichwertige Abfluesse" correctly. flys/issue55
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
53 b = 0.5*(y2 + y1);
909196be11a0 First step to calculate "W fuer ungleichwertige Abfluesse" correctly. flys/issue55
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
54 }
909196be11a0 First step to calculate "W fuer ungleichwertige Abfluesse" correctly. flys/issue55
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
55 else {
909196be11a0 First step to calculate "W fuer ungleichwertige Abfluesse" correctly. flys/issue55
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
56 m = (y2 - y1)/(x2 - x1);
909196be11a0 First step to calculate "W fuer ungleichwertige Abfluesse" correctly. flys/issue55
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
57 b = y1 - m*x1;
909196be11a0 First step to calculate "W fuer ungleichwertige Abfluesse" correctly. flys/issue55
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
58 }
909196be11a0 First step to calculate "W fuer ungleichwertige Abfluesse" correctly. flys/issue55
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
59
909196be11a0 First step to calculate "W fuer ungleichwertige Abfluesse" correctly. flys/issue55
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
60 head = new Segment(from, to, m, b, head);
909196be11a0 First step to calculate "W fuer ungleichwertige Abfluesse" correctly. flys/issue55
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
61 }
909196be11a0 First step to calculate "W fuer ungleichwertige Abfluesse" correctly. flys/issue55
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
62
909196be11a0 First step to calculate "W fuer ungleichwertige Abfluesse" correctly. flys/issue55
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
63 public double eval(double pos, double x) {
909196be11a0 First step to calculate "W fuer ungleichwertige Abfluesse" correctly. flys/issue55
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
64 Segment current = head;
909196be11a0 First step to calculate "W fuer ungleichwertige Abfluesse" correctly. flys/issue55
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
65
909196be11a0 First step to calculate "W fuer ungleichwertige Abfluesse" correctly. flys/issue55
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
66 while (current != null) {
909196be11a0 First step to calculate "W fuer ungleichwertige Abfluesse" correctly. flys/issue55
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
67
909196be11a0 First step to calculate "W fuer ungleichwertige Abfluesse" correctly. flys/issue55
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
68 if (pos >= current.from && pos <= current.to) {
909196be11a0 First step to calculate "W fuer ungleichwertige Abfluesse" correctly. flys/issue55
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
69 return current.eval(x);
909196be11a0 First step to calculate "W fuer ungleichwertige Abfluesse" correctly. flys/issue55
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
70 }
909196be11a0 First step to calculate "W fuer ungleichwertige Abfluesse" correctly. flys/issue55
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
71
909196be11a0 First step to calculate "W fuer ungleichwertige Abfluesse" correctly. flys/issue55
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
72 current = current.next;
909196be11a0 First step to calculate "W fuer ungleichwertige Abfluesse" correctly. flys/issue55
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
73 }
909196be11a0 First step to calculate "W fuer ungleichwertige Abfluesse" correctly. flys/issue55
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
74
909196be11a0 First step to calculate "W fuer ungleichwertige Abfluesse" correctly. flys/issue55
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
75 return Double.NaN;
909196be11a0 First step to calculate "W fuer ungleichwertige Abfluesse" correctly. flys/issue55
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
76 }
909196be11a0 First step to calculate "W fuer ungleichwertige Abfluesse" correctly. flys/issue55
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
77 }
909196be11a0 First step to calculate "W fuer ungleichwertige Abfluesse" correctly. flys/issue55
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
78 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org