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<html><head><title>boxcount</title></head><body bgcolor=white><h1 align=center>Description of the program: <font color=Blue>boxcount</font></h1><hr>This program estimates the Renyi <a href="../chaospaper/node34.html">entopy</a>of Qth order using a partitionof the phase space instead of using the Grassberger-Procacciascheme. The program also can handle multivariate data, so that thephase space is build of the components of the time series plus atemporal embedding, if desired.I should mention that the memory requirement does not increaseexponentially like 1/epsilon<sup>M</sup> but only like M*(length ofseries). So it can also be used for small epsilon and large M.<br>No finite sample corrections are implemented so far.<br><hr><h2 align=center>Usage:</h2><center><font color=Red>boxcount [Options]</font><p>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<p>Possible options are:<p><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>columns to be read</a><td>1,...,# of components</tr><tr><th>-d#<td>delay for the delay vectors<td>1</tr><tr><th>-M#<td># of components, maximal embedding dimension<td>1,10</tr><tr><th>-Q#<td>Order of the entropy<td>2.0</tr><tr><th>-R#<td>maximal length scale <td>whole data range</tr><tr><th>-r#<td>minimal length scale<td>(data range)/1000</tr><tr><th>-##<td>number of epsilon values<td>20</tr><tr><th>-o[#]<td> <a href=../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>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><hr><h2 align=center>Description of the Output:</h2>The output file contains three columns for each dimension and for each epsilon value:<ol><li>epsilon</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 second line gives an estimate of D<sub>Q</sub>(m,epsilon).<hr>View the <a href="../../source_c/boxcount.c">C-source</a>.<hr>See also <a href="d2.html">d2</a>, <ahref="../docs_f/c2naive.html">c2naive</a>, and <a href="../docs_f/c1.html">c1</a> <hr><a href=../contents.html>Table of Contents</a> * <a href="../../index.html" target="_top">TISEAN home</a></body></html>⌨️ 快捷键说明
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