changes.html

非线性时间学列分析工具

<h4 align=center>Bug Fixes</h4>
<ul>
<li><a name="lyap_spec"></a>
<a href="lyap_spec.html">lyap_spec</a> was expecting a value for
the flag -I though there was no need for it. FIXED (Results were not
influenced)</li>
<li><a name="extrema"></a>
<a href="extrema.html">extrema</a>: The first value was
nonsens. FIXED. (All other values were not influenced)</li>
<li><a name="false_nearest"></a>
<a href="false_nearest.html">false_nearest</a>: The condition for
the maximal allowed distance between the pairs of points was
implemented wrongly. FIXED. (It did influence your results, but buggy
though, it was still a stronger condition than the original one of
Kennel et al.)</li>
</ul>
<hr>
<h4 align=center>New programs</h4>
<ul>
<li><a name="fsle"></a>
A program for estimating the finite size Lyapunov exponents <a
href="fsle.html">fsle</a> was added. (BETA. I'm not completely sure
whether this program does what it is supposed to do. So please be
careful in using it.)</li>
<li><a name="resample"></a>
<a href="resample.html">resample</a>: A program for resampling a  
time series (of a flow system, of course) with a new sampling time.</li>
</ul>
<hr>
<a href="#top">top</a> of the page.
<hr>
<center><font size=4 color=blue><b>
<a name="tisean0.9">TISEAN_0.9 -&gt; TISEAN_1.0</a>
</b></font></center>
</b></font></center>
<hr>
<h4 align=center>Changes</h4>
<ul>
<li>Now each html file in the docs directory contains a description of
what the output of the programs is.</li>
<li>The <a href="false_nearest.html">false_nearest</a> routine didn't
implement the second condition of the <a
href="../chaospaper/citation.html#kennel92">Kennel et al</a> paper. Now it is
implemented (Thanks to Wolfgang M&uuml;ller and Angelo De Santis).</li>
<li>For each program which reads only one column you can now specify
the number of the column in the filename separated by a comma.<br>
Example: <i>hen,1</i> means use column <i>1</i> of file <i>hen</i><br>
Should work in a similar way as in the Wuppertal part.
</ul>
<hr>
<h4 align=center>Bug Fixes</h4>
<ul>
<li>The <a href="../c/routines/search_datafile.c">search_datafile</a>
routines produced a <i>Segmentation fault</i> on some systems when no
valid filename was given. FIXED<br>
Additionally, if no valid filename is given at all, now stdin is read.</li>
</ul>
<hr>
<h4 align=center>New programs</h4>
<ul>
<li>NONE
</ul>
<hr>
<a href="#top">top</a> of the page.
<hr>
<center><font size=4 color=blue><b>
<a name="tisean0.5">TISEAN_0.5 -&gt; TISEAN_0.9</a>
</b></font></center>
<hr>
<h4 align=center>Changes</h4>
<ul>
<li>The datafile has no longer to be the first parameter given in the
command line. It can appear anywhere. Actually, everything not being a
valid command line option will be interpreted as a possible datafile
name. If no datafile is given at all or if <font color=Red>-</font> is
given, stdin is read. If more than one datafile is specified, the last
valid one (means the last that exists) is read.<br>
A consequence is that just calling a program without given any
parameter means now: call the program with all parameters set to their
defaults and read from stdin. That means, to activate the help option,
you have to give the <font color=red>-h</font> flag in any case.</li>
<li>New option (<font color=red>-t</font>) in the 
<a href="extrema.html">extrema</a> program.</li>
<li>The meaning of the <font color=red>-s</font> flag in the 
<a href="zeroth.html">zeroth</a> program has been changed slightly. Now
giving steps larger 1 means that the program calculates all forecast errors
from step 1 to the given step. Furthermore, the output can now be written to
a file.</li>
<li>The output of the <a href="mem_spec.html">mem_spec</a> was modified to
be compatible with the output of <a href="../docs_f/spectrum.html">
spectrum</a>.</li>
<li>I modified the handling of the command line options. Now it is possible
either set a space between the flag and the value (e.g. <font color=red>
-d 3</font>) or not (e.g. <font color=red>-d3</font>). There is one flag 
<font color=red>-o</font> which can be called with a parameter or
without. Be careful! Placing the input file name in back of this flag
will cause the program to interpret it as the parameter for the
flag.</li>
<li>I succeded in removing all <font color=red>NR</font>-stuff from
the package.</li>
<li>Some of the names of flags are changed to unify them with the ones
from the Wuppertal part.</li>
<li>New flag <font color=red>-r</font> in the program 
<a href="makenoise.html">makenoise</a>. With it you can give the absolute
noiselevel (or the absolute variance in case of gaussian noise). This means
you can now produce N pure (gaussian) random numbers centered around x by<br>
<tt><font color=red>yes x |head -N | makenoise -r something (-g) -o filename
</font></tt></li>
<li>Some changes in the parameters of <a href="svd.html">svd</a>.</li>
<li>A new flag <font color=red>-V</font> for <a href="low121.html">low121</a>
which can reduce the number of output files.</li>
</ul>
<hr>
<h4 align=center>Bug Fixes</h4>
<ul>
<li>Due to the changes from Release 0.3 to 0.4 I introduced a bug in the 
program <a href="rbf.html">rbf</a>. Fixed</li>
<li>I called two flags in the <a href="poincare.html">poincare</a>
the same. Embarrassing isn't it? FIXED.</li>
<li>Major bug in <a href="lyap_spec.html">lyap_spec</a>. The result always
was <tt>floating exception</tt>. Fixed (Thanks to Eckehard)</li>
<li>Minor bug in <a href="lyap_k.html">lyap_k</a>. The statistics was
written to stdout instead of stderr. Fixed (Thanks to Thomas)</li>
</ul>
<hr>
<h4 align=center>New programs</h4>
<ul>
<li> The program <a href="ll-ar.html">ll-ar</a> estimates the onestep
prediction error for a local linear ansatz as a function of the neighborhood
size with which the function was fitted. Could give hints whether the system
is describable by an AR-model or not.</li>
<li>There are three new program for fitting polynomials. The main one is
<a href="polynomp.html">polynomp</a> that fits a polynomial consisting
of a free configurable number of terms. <a
href="polyback.html">polyback</a> does a backward elimination and <a
href="polypar.html">polypar</a> creates a parameter file that contains
all possible terms of a polynomial.</li>
<li>I started to add programs which handle either multivariate data or
different univariate time series. The first one is <a
href="xcor.html">xcor</a> which computes the cross
correlations of two components.</li>
<li><a href="xzero.html">xzero</a>: Make a zeroth order cross
prediction of two time series.</li>
<li><a href="boxcount.html">boxcount</a>: Estimate the Qth order
Renyi entropy using a partitioning of the data.</li>
<li><a href="xc2.html">xc2</a>: Compute the cross correlation sum of
two time series.</li>
</ul>
<hr>
<a href="#top">top</a> of the page.
<hr>
<center><font size=4 color=blue><b>
<a name="tisean0.4">TISEAN_0.4 -&gt; TISEAN_0.5</a>
</b></font></center>
<hr>
<h4 align=center>Changes</h4>
<ul>
<li> Minor :-) modification of the Makefile structure.</li>
</ul>
<hr>
<h4 align=center>Bug Fixes</h4>
<hr>
<h4 align=center>New programs</h4>
<hr>
<a href="#top">top</a> of the page.
<hr>
<center><font size=4 color=blue><b>
<a name="tisean0.3">TISEAN_0.3 -&gt; TISEAN_0.4</a>
</b></font></center>
<hr>
<h4 align=center>Changes</h4>
<ul>
<li> The <a href="polynom.html">polynom</a> program is now able to
devide the data into insample and out of sample points.</li>
<li> The <a href="rbf.html">rbf</a> program is now able to
devide the data into insample and out of sample points.</li>
<li> All programs are now able to read from stdin. The only exception
is <a href="av-d2.html">av-d2</a>, since it needs a special input format.</li>
<li> All system calls were removed from the programs.
Maybe that makes it easier to convert the programs to non unix operating
systems.</li>
<li> The program <a href="poincare.html">poincare</a> does no longer use
the internal menu. Now it reads all parameters from the command line.</li>
</ul>
<hr>
<h4 align=center>Bug Fixes</h4>
<ul>
<li>Bug in the <a href="makenoise.html">makenoise</a> fixed.
The effect was that there was no default <a href=../general.html#column>column to be read</a>. Results
were not influenced by this bug.
(Thanks to Eckehard Olbrich)</li>
<li>Bug in <a href="mutual.html">mutual</a> fixed. The program wanted
the -s option to read the column, while the docs said its -c. Now it is
-c. (Thanks to Jochen Arnhold)</li>
</ul>
<hr>
<h4 align=center>New programs</h4>
<ul>
<li><a href="rescale.html">rescale</a>: Rescales the time series to a 
specified interval or to average=0 and/or variance=1.</li>
<li><a href="false_nearest.html">false_nearest</a>: The false nearest
neighbor method</li>
<li><a href="zeroth.html">zeroth</a>: Determine the forecast error of 
the optimal zeroth order model</li>
</ul>
<hr>
<a href="#top">top</a> of the page.
<hr>
<center><font size=4 color=blue><b>
<a name="tisean0.2">TISEAN_0.2 -&gt; TISEAN_0.3</a>
</b></font></center>
<hr>
<h4 align=center>Changes</h4>
<ul>
<li>The output of the .stat file of the d2 program is maybe less cryptic now.
<li>The histogram program now additionally gives the interval of the data.
<li>Installation notes updated.
</ul>
<hr> 
<h4 align=center>Bug Fixes</h4>
<ul>
<li>The scramble routine of d2 was doing wrong. FIXED (Thanks to
Eckehard Olbrich)
<li>Finally the bug in the ar-model is FIXED (Thanks to Eckehard again)
<li>Due to a change in the make_box routine in libtsa_routines.a,
nrlazy was doing nonsense. FIXED 
</ul>
<hr>
<h4 align=center>New programs</h4>
<ul>
<li><a href="extrema.html">extrema</a>: Determine the extrema of a
time series.
<li><a href="av-d2.html">av-d2</a>: Smooth the output of the d2
program.
</ul>
<hr>
<a href="#top">top</a> of the page.
<hr>
<center><font size=4 color=blue><b>
<a name="tisean0.1">TISEAN_0.1 -&gt; TISEAN_0.2</a>
</b></font></center>
<hr>
<h4 align=center>Changes</h4>
<ul>
<li><font color=red>make all</font> is now the default rule in the
Makefile. That means, make will compile all programs without
installing them. (Thanks to Wolfgang Trappe)
<li>The comments in the C-sources are no longer // but /*...*/ instead,
since // does not work with all C compilers. (Thanks to Volker Ahlers)
<li>I started to create a library which contains some useful
routines. One aim of this library is to replace the routines from the
Numerical recipes, so that this package becomes completely independent from
commercial software. This will last some more versions.
</ul>
<hr> 
<h4 align=center>Bug Fixes</h4>
<ul>
<li><a href="ar-model.html">ar-model</a> ignored the -x option. FIXED
<li>In <a href="svd.html">svd</a> the new basis of the vectors was
wrong due to a index permutation. FIXED
</ul>
<hr>
<h4 align=center>New programs</h4>
<ul>
<li><a href="low121.html">low121</a>: A simple time domain low pass
filter.
<li><a href="ghkss.html">ghkss</a>:A sophisticated noise reduction
program. See also 
<a href="../docs_c/project.html">project</a>. 
</ul>
<hr>
<a href="#top">top</a> of the page.
<hr>
</body>
</html>