📄 svd.html
字号:
<html><head><title>svd</title></head><body bgcolor=white><h1 align=center>Description of the program: <font color=Blue>svd</font></h1><hr>This program performs a global SVD. It gives the singular values ofthe covariance matrix and if the -q flag is set either the data in thebasis of the eigenvectors or, if a the parameter of the -q flag is smaller than the embedding dimension, the projected scalar time series. Some authors state such a projection to be a noise reduction scheme. But this is only true if both, the system and the measurement function, are linear.<hr><h2 align=center>Usage:</h2><center><font color=Red>svd [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 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>column to be read</a><td>1</tr><tr><th>-m#<td>dimension of the basis<td>2</tr><tr><th>-d#<td>delay<td>1</tr><tr><th>-q#<td>project down to # dimensions and write the projected time series<br>or if # equals the embedding dimension, write the vectors in the svd basis<td>none (only write eigenvalues)</tr><tr><th>-o[#]<td><a href=../general.html#outfile>output file name</a><td>-o without argument means 'datafile'.svd<br>(or stdin.svd if data were read from stdin)<br>without -o means stdout</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 consists of the singular values and if the <fontcolor=blue>-q</font> option was used, the vectors in the SVD basis (ifthe dimension projected down to equalled the embedding dimension), orthe projected (filtered) time series (if the dimension projected downto was smaller than the embedding dimension).<hr>View the <a href="../../source_c/svd.c"> C-sources</a>.<hr>See also <a href="../docs_f/pc.html">pc</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
复制代码
Ctrl + C
搜索代码
Ctrl + F
全屏模式
F11
切换主题
Ctrl + Shift + D
显示快捷键
?
增大字号
Ctrl + =
减小字号
Ctrl + -