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== Porting TISEAN == | == Porting TISEAN == | ||
This section | This section will focus on demonstrating the capabilities of the TISEAN package. The previous information about the porting procedure has been moved [[TISEAN_package:Procedure|here]]. | ||
== Tutorials == | == Tutorials == | ||
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* [http://www.mpipks-dresden.mpg.de/~tisean/Tisean_3.0.1/docs/tutorial/amplitude.dat amplitude.dat] | * [http://www.mpipks-dresden.mpg.de/~tisean/Tisean_3.0.1/docs/tutorial/amplitude.dat amplitude.dat] | ||
Please download it as the tutorial will reference it. | Please download it as the tutorial will reference it. | ||
=== | === Noise Reduction === | ||
This tutorial show different methods of the 'Noise Reduction' section of the TISEAN documentation (located [http://www.mpipks-dresden.mpg.de/~tisean/Tisean_3.0.1/docs/chaospaper/node22.html#SECTION00060000000000000000 here]). It shows the use of simple nonlinear noise reduction (function {{Codeline|lazy}}) and locally projective nonlinear noise reduction (function {{Codeline|ghkss}}). To start let's create noisy data to work with. | |||
This tutorial show different methods of the ' | |||
{{Code|Creating a noisy henon map|<syntaxhighlight lang="octave" style="font-size:13px"> | {{Code|Creating a noisy henon map|<syntaxhighlight lang="octave" style="font-size:13px"> | ||
hen = henon (10000); | hen = henon (10000); | ||
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delay_noisy = delay (hen_noisy); | delay_noisy = delay (hen_noisy); | ||
# Plot both on one chart | # Plot both on one chart | ||
plot (delay_noisy(:,1), delay_noisy(:,2), 'b.;Noisy Data;','markersize | plot (delay_noisy(:,1), delay_noisy(:,2), 'b.;Noisy Data;','markersize,3,... | ||
delay_clean(:,1), delay_clean(:,2), 'r.;Clean Data;','markersize | delay_clean(:,1), delay_clean(:,2), 'r.;Clean Data;','markersize,3) | ||
</syntaxhighlight>}} | </syntaxhighlight>}} | ||
On the chart created the red dots represent cleaned up data. It is much closer to the original than the noisy blue set.<br/> | On the chart created the red dots represent cleaned up data. It is much closer to the original than the noisy blue set.<br/> | ||
Now we will do the same with {{Codeline|ghkss}}. | Now we will do the same with {{Codeline|ghkss}}. | ||
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The rest of the code is the same as the code used in the {{Codeline|lazy}} example. <br/> | The rest of the code is the same as the code used in the {{Codeline|lazy}} example. <br/> | ||
Once both results are compared it is quite obvious that for this particular example {{Codeline|ghkss}} is superior to {{Codeline|lazy}}. The TISEAN documentation points out that this is not always the case. | Once both results are compared it is quite obvious that for this particular example {{Codeline|ghkss}} is superior to {{Codeline|lazy}}. The TISEAN documentation points out that this is not always the case. | ||
[[ | [[Category:Octave-Forge]] | ||
== External links == | == External links == | ||
* [https://bitbucket.org/josiah425/tisean Bitbucket repository ] where the porting is taking place. | * [https://bitbucket.org/josiah425/tisean Bitbucket repository ] where the porting is taking place. | ||
* [http://www.mpipks-dresden.mpg.de/~tisean/Tisean_3.0.1/ TISEAN package website] where the package is described along with references to literature, tutorials and manuals. | * [http://www.mpipks-dresden.mpg.de/~tisean/Tisean_3.0.1/ TISEAN package website] where the package is described along with references to literature, tutorials and manuals. | ||