Mercurial > dive4elements > river
annotate flys-artifacts/src/main/java/de/intevation/flys/artifacts/math/fitting/Linear.java @ 3177:585c0b49e696
Added inverses of the fitting functions.
flys-artifacts/trunk@4792 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author | Sascha L. Teichmann <sascha.teichmann@intevation.de> |
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date | Tue, 26 Jun 2012 06:33:37 +0000 |
parents | 4dda67a893da |
children |
rev | line source |
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2569
0dd58ab7e118
Added functions to be used for fitting in the "Fixierungsanalyse" and "Extremwertermittlung".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
1 package de.intevation.flys.artifacts.math.fitting; |
0dd58ab7e118
Added functions to be used for fitting in the "Fixierungsanalyse" and "Extremwertermittlung".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
2 |
0dd58ab7e118
Added functions to be used for fitting in the "Fixierungsanalyse" and "Extremwertermittlung".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
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3 public class Linear |
0dd58ab7e118
Added functions to be used for fitting in the "Fixierungsanalyse" and "Extremwertermittlung".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
4 extends Function |
0dd58ab7e118
Added functions to be used for fitting in the "Fixierungsanalyse" and "Extremwertermittlung".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
5 { |
3009
4dda67a893da
FixA: Added the derivatives of all fitting functions.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2569
diff
changeset
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6 public static final Derivative DERIVATIVE = |
4dda67a893da
FixA: Added the derivatives of all fitting functions.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2569
diff
changeset
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7 new Derivative("W'(Q) = m") { |
4dda67a893da
FixA: Added the derivatives of all fitting functions.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2569
diff
changeset
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8 |
4dda67a893da
FixA: Added the derivatives of all fitting functions.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2569
diff
changeset
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9 @Override |
4dda67a893da
FixA: Added the derivatives of all fitting functions.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
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changeset
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10 public de.intevation.flys.artifacts.math.Function |
4dda67a893da
FixA: Added the derivatives of all fitting functions.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2569
diff
changeset
|
11 instantiate(double [] parameters) |
4dda67a893da
FixA: Added the derivatives of all fitting functions.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2569
diff
changeset
|
12 { |
4dda67a893da
FixA: Added the derivatives of all fitting functions.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2569
diff
changeset
|
13 final double m = parameters[0]; |
4dda67a893da
FixA: Added the derivatives of all fitting functions.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2569
diff
changeset
|
14 |
4dda67a893da
FixA: Added the derivatives of all fitting functions.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2569
diff
changeset
|
15 return new de.intevation.flys.artifacts.math.Function() { |
4dda67a893da
FixA: Added the derivatives of all fitting functions.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2569
diff
changeset
|
16 @Override |
4dda67a893da
FixA: Added the derivatives of all fitting functions.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2569
diff
changeset
|
17 public double value(double Q) { |
4dda67a893da
FixA: Added the derivatives of all fitting functions.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2569
diff
changeset
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18 return m; |
4dda67a893da
FixA: Added the derivatives of all fitting functions.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2569
diff
changeset
|
19 } |
4dda67a893da
FixA: Added the derivatives of all fitting functions.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2569
diff
changeset
|
20 }; |
4dda67a893da
FixA: Added the derivatives of all fitting functions.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2569
diff
changeset
|
21 } |
4dda67a893da
FixA: Added the derivatives of all fitting functions.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2569
diff
changeset
|
22 }; |
4dda67a893da
FixA: Added the derivatives of all fitting functions.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2569
diff
changeset
|
23 |
3177
585c0b49e696
Added inverses of the fitting functions.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
3009
diff
changeset
|
24 public static final Function INSTANCE = new Linear(); |
585c0b49e696
Added inverses of the fitting functions.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
3009
diff
changeset
|
25 |
2569
0dd58ab7e118
Added functions to be used for fitting in the "Fixierungsanalyse" and "Extremwertermittlung".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
26 public Linear() { |
0dd58ab7e118
Added functions to be used for fitting in the "Fixierungsanalyse" and "Extremwertermittlung".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
27 super("linear", "W(Q) = m*Q + b", new String [] { "m", "b" }); |
0dd58ab7e118
Added functions to be used for fitting in the "Fixierungsanalyse" and "Extremwertermittlung".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
28 } |
0dd58ab7e118
Added functions to be used for fitting in the "Fixierungsanalyse" and "Extremwertermittlung".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
29 |
0dd58ab7e118
Added functions to be used for fitting in the "Fixierungsanalyse" and "Extremwertermittlung".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
30 @Override |
0dd58ab7e118
Added functions to be used for fitting in the "Fixierungsanalyse" and "Extremwertermittlung".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
31 public double value(double x, double [] parameters) { |
0dd58ab7e118
Added functions to be used for fitting in the "Fixierungsanalyse" and "Extremwertermittlung".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
32 return x*parameters[0] + parameters[1]; |
0dd58ab7e118
Added functions to be used for fitting in the "Fixierungsanalyse" and "Extremwertermittlung".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
33 } |
0dd58ab7e118
Added functions to be used for fitting in the "Fixierungsanalyse" and "Extremwertermittlung".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
34 |
0dd58ab7e118
Added functions to be used for fitting in the "Fixierungsanalyse" and "Extremwertermittlung".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
35 @Override |
0dd58ab7e118
Added functions to be used for fitting in the "Fixierungsanalyse" and "Extremwertermittlung".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
36 public double [] gradient(double x, double [] parameters) { |
0dd58ab7e118
Added functions to be used for fitting in the "Fixierungsanalyse" and "Extremwertermittlung".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
37 return new double [] { x, 1d }; |
0dd58ab7e118
Added functions to be used for fitting in the "Fixierungsanalyse" and "Extremwertermittlung".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
38 } |
3009
4dda67a893da
FixA: Added the derivatives of all fitting functions.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2569
diff
changeset
|
39 |
4dda67a893da
FixA: Added the derivatives of all fitting functions.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2569
diff
changeset
|
40 @Override |
4dda67a893da
FixA: Added the derivatives of all fitting functions.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2569
diff
changeset
|
41 public Derivative getDerivative() { |
4dda67a893da
FixA: Added the derivatives of all fitting functions.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2569
diff
changeset
|
42 return DERIVATIVE; |
4dda67a893da
FixA: Added the derivatives of all fitting functions.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2569
diff
changeset
|
43 } |
3177
585c0b49e696
Added inverses of the fitting functions.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
3009
diff
changeset
|
44 |
585c0b49e696
Added inverses of the fitting functions.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
3009
diff
changeset
|
45 @Override |
585c0b49e696
Added inverses of the fitting functions.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
3009
diff
changeset
|
46 public Function getInverse() { |
585c0b49e696
Added inverses of the fitting functions.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
3009
diff
changeset
|
47 return InvLinear.INSTANCE; |
585c0b49e696
Added inverses of the fitting functions.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
3009
diff
changeset
|
48 } |
2569
0dd58ab7e118
Added functions to be used for fitting in the "Fixierungsanalyse" and "Extremwertermittlung".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
49 } |
0dd58ab7e118
Added functions to be used for fitting in the "Fixierungsanalyse" and "Extremwertermittlung".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
50 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 : |