Mercurial > dive4elements > river
annotate flys-artifacts/src/main/java/de/intevation/flys/artifacts/math/fitting/Log.java @ 3133:6f6a8e5fb7a4
Theme updates for sector average wq curves/points
flys-artifacts/trunk@4740 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author | Christian Lins <christian.lins@intevation.de> |
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date | Thu, 21 Jun 2012 12:26:08 +0000 |
parents | 4dda67a893da |
children | 6b13d7e7b403 |
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
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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
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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 Log |
0dd58ab7e118
Added functions to be used for fitting in the "Fixierungsanalyse" and "Extremwertermittlung".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
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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
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5 { |
3009
4dda67a893da
FixA: Added the derivatives of all fitting functions.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
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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:
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7 new Derivative("W'(Q) = m/(Q+b)") { |
4dda67a893da
FixA: Added the derivatives of all fitting functions.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2569
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changeset
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8 |
4dda67a893da
FixA: Added the derivatives of all fitting functions.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
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9 @Override |
4dda67a893da
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
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10 public de.intevation.flys.artifacts.math.Function |
4dda67a893da
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
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11 instantiate(double [] parameters) |
4dda67a893da
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
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12 { |
4dda67a893da
FixA: Added the derivatives of all fitting functions.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
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13 final double m = parameters[0]; |
4dda67a893da
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
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changeset
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14 final double b = parameters[1]; |
4dda67a893da
FixA: Added the derivatives of all fitting functions.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2569
diff
changeset
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15 |
4dda67a893da
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
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changeset
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16 return new de.intevation.flys.artifacts.math.Function() { |
4dda67a893da
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
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17 @Override |
4dda67a893da
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
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18 public double value(double Q) { |
4dda67a893da
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
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19 return m/(Q+b); |
4dda67a893da
FixA: Added the derivatives of all fitting functions.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
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diff
changeset
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20 } |
4dda67a893da
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
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diff
changeset
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21 }; |
4dda67a893da
FixA: Added the derivatives of all fitting functions.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2569
diff
changeset
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22 } |
4dda67a893da
FixA: Added the derivatives of all fitting functions.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2569
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changeset
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23 }; |
4dda67a893da
FixA: Added the derivatives of all fitting functions.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2569
diff
changeset
|
24 |
2569
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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25 public Log() { |
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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26 super("log", "W(Q) = m*ln(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
|
27 } |
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 @Override |
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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30 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
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31 return parameters[0]*Math.log(x + 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
|
32 } |
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 @Override |
0dd58ab7e118
Added functions to be used for fitting in the "Fixierungsanalyse" and "Extremwertermittlung".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
35 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
|
36 return new double [] { |
0dd58ab7e118
Added functions to be used for fitting in the "Fixierungsanalyse" and "Extremwertermittlung".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
37 Math.log(x + 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
|
38 parameters[0]/(x + parameters[0]) |
0dd58ab7e118
Added functions to be used for fitting in the "Fixierungsanalyse" and "Extremwertermittlung".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
39 }; |
0dd58ab7e118
Added functions to be used for fitting in the "Fixierungsanalyse" and "Extremwertermittlung".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
40 } |
3009
4dda67a893da
FixA: Added the derivatives of all fitting functions.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2569
diff
changeset
|
41 |
4dda67a893da
FixA: Added the derivatives of all fitting functions.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2569
diff
changeset
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42 @Override |
4dda67a893da
FixA: Added the derivatives of all fitting functions.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2569
diff
changeset
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43 public Derivative getDerivative() { |
4dda67a893da
FixA: Added the derivatives of all fitting functions.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2569
diff
changeset
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44 return DERIVATIVE; |
4dda67a893da
FixA: Added the derivatives of all fitting functions.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2569
diff
changeset
|
45 } |
2569
0dd58ab7e118
Added functions to be used for fitting in the "Fixierungsanalyse" and "Extremwertermittlung".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
46 } |
0dd58ab7e118
Added functions to be used for fitting in the "Fixierungsanalyse" and "Extremwertermittlung".
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
47 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 : |