# Description of the program: poincare

This programs makes a Poincaré section for time continuous scalar data sets along one of the coordinates of the embedding vector.

## Usage:

poincare [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
-m# | embedding dimension | 2
-d# | delay | 1
-q# | component for the crossing | last
-C# | direction of the crossing (0: from below, 1: from above) | 0
-a# | position of the crossing | average of the data
-o# | output file name | without file name:'datafile'.poin (or stdin.poin if data were read from stdin) without -o option data is written to stdout
-V# | verbosity level 0: only panic messages 1: add input/output messages | 1
-h | show these options | none

## Description of the Output:

The output file contains m components for each cut. The first m-1 components are the coordinates of the vector at the crossing, the last one is the time between the last two crossings (see Hegger, Kantz).

View the C-sources.

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