# Description of the program: polynomp

This programs models the data making a polynomial ansatz. It differs from the polynom program in the following way. It reads the terms of the polynomial from a parameter file. You can either create such a file by hand or by the program polypar (See there for a description of how the parameter file has to look like). The advantage is that it is possible to select the terms in the polynomial either by hand or by a backward elimination.

## Usage:

polynomp [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 data 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
-n# | length for the insample error estimation | all
-L# | length of the trajectory to cast | 1000
-p# | name of the parameter file | parameter.pol
-o# | output file name; without -o data is written to stdout | 'datafile'.pbf
-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:
first row: forecasterrors (insample and out of sample)
next rows: The parameter of the model
last rows: the forecasted trajectory

View the C-sources.

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