boxcount.html
来自「an analysis software with souce code for」· HTML 代码 · 共 124 行
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boxcount
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<h1 align=center>Description of the program:
<font color=Blue>
boxcount
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This program estimates the Renyi <a href="../chaospaper/node34.html" tppabs="http://www.mpipks-dresden.mpg.de/~tisean/TISEAN_2.0/docs/chaospaper/node34.html">entopy</a>
of Qth order using a partition
of the embedding space instead of using the Grassberger-Procaccia
scheme. I should mention that the memory requirement does not increase
exponentially like 1/epsilon<sup>M</sup> but only like M*(length of
series). So it can also be used for small epsilon and large M.<br>
No finite sample corrections are implemented so far.
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<h2 align=center>Usage:</h2>
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<font color=Red>boxcount [Options]</font>
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Everything not being a valid option will be interpreted as a potential datafile name. Given no datafile at all, means read stdin. Also <font color=Red>-</font> means stdin
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Possible options are:
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<table border=2>
<tr>
<th>Option
<th>Description
<th>Default
</tr>
<tr>
<th>-l#
<td>number of data points to be used
<td>whole file
</tr>
<tr>
<th>-x#
<td>number of lines to be ignored
<td>0
</tr>
<tr>
<th>-c#
<td><a href="../general.html#column" tppabs="http://www.mpipks-dresden.mpg.de/~tisean/TISEAN_2.0/docs/general.html#column">column to be read</a>
<td>1
</tr>
<tr>
<th>-d#
<td>delay for the delay vectors
<td>1
</tr>
<tr>
<th>-M#
<td>maximal embedding dimension
<td>10
</tr>
<tr>
<th>-Q#
<td>Order of the entropy
<td>2.0
</tr>
<tr>
<th>-E#
<td>maximal length scale
<td>1 (data are rescaled to [0:1])
</tr>
<tr>
<th>-e#
<td>minimal length scale
<td>1e-3 (data are rescaled to [0:1])
</tr>
<tr>
<th>-##
<td>number of epsilon values
<td>20
</tr>
<tr>
<th>-o[#]
<td> <a href="../general.html#outfile" tppabs="http://www.mpipks-dresden.mpg.de/~tisean/TISEAN_2.0/docs/general.html#outfile">output file name</a>
<td> 'datafile'.box
(or if data were read from stdin: stdin.box)
</tr>
<tr>
<th>-V#
<td><a href="../general.html#verbosity" tppabs="http://www.mpipks-dresden.mpg.de/~tisean/TISEAN_2.0/docs/general.html#verbosity">verbosity level</a><br>
0: only panic messages<br>
1: add input/output messages
<td>1
</tr>
<tr>
<th>-h
<td>show these options
<td>none
</tr>
</table>
</center>
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<h2 align=center>Description of the Output:</h2>
The output file contains four columns for each embedding dimension from
1 to <font color=blue>M</font> and for each epsilon value:
<ol>
<li>epsilon (in rescaled units)</li>
<li>epsilon (in natural units)</li>
<li>Qth order entropy (H<sub>Q</sub>(dimension,epsilon))</li>
<li>Qth order differential entropy (
H<sub>Q</sub>(dimension,epsilon)-H<sub>Q</sub>(dimension-1,epsilon))</li>
</ol>
The slope of the third line gives an estimate of D<sub>Q</sub>.
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View the <a href="../../source_c/boxcount.c" tppabs="http://www.mpipks-dresden.mpg.de/~tisean/TISEAN_2.0/source_c/boxcount.c">C-source</a>.
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See also <a href="d2.html" tppabs="http://www.mpipks-dresden.mpg.de/~tisean/TISEAN_2.0/docs/dresden/d2.html">d2</a>, <a
href="../wuppertal/c2naive.html" tppabs="http://www.mpipks-dresden.mpg.de/~tisean/TISEAN_2.0/docs/wuppertal/c2naive.html">c2naive</a>, and
<a href="../wuppertal/c1.html" tppabs="http://www.mpipks-dresden.mpg.de/~tisean/TISEAN_2.0/docs/wuppertal/c1.html">c1</a>
<hr>
<a href="../contents.html" tppabs="http://www.mpipks-dresden.mpg.de/~tisean/TISEAN_2.0/docs/contents.html">Table of Contents</a> * <a href="../../index.html" tppabs="http://www.mpipks-dresden.mpg.de/~tisean/TISEAN_2.0/index.html" target="_top">TISEAN home</a>
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