Description of the program: extrema


This program determines the maxima (minima) of a time series. This corresponds to a Poincaré section at the zeros of the derivative. To get a better estimate of the extremum, a quadratic interpolation is done.

Note: Very sensitive to noise!


Usage:

extrema [Options]

Everything not being a valid option will be interpreted as a potential datafile name. Given no datafile at all, means read stdin. Also - means stdin

Possible options are:

Option Description Default
-l# number of points to use whole file
-x# number of lines to be ignored 0
-c# column to be read 1
-z determine minima instead of maxima maxima
-t# minimal time required between two extrema 0.0
-o# output file name without file name: 'datafile'.ext
(or stdin.ext if data were read from stdin)
if no -o is given stdout is used
-V# verbosity level
  0: only panic messages
  1: add input/output messages
1
-h show these options none


Description of the Output:

The output consists of two columns:
View the C-sources.
Table of Contents * TISEAN home