# Description of the program: makenoise

This program just takes the data and adds a desired amount of noise to it. It is largely redundant with addnoise but uses a better random number generator, Rainer believes. On the other hand, addnoise can be run as a noise source without any input file.

## Usage:

makenoise [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
-%# | noiselevel in percent | 5
-r# | absolute noiselevel (or absolute variance if -g is set) | not set
-g | add gaussian noise instead of uniform | uniform
-I# | change the seed of the random number generator If # = 0, the seed is taken from the time command, which means the seed is set to the number of seconds since Jan 1st, 1970 | some fixed value
-o# | output file name | -o without a name given: 'datafile'.noi (or stdin.noi if data were read from stdin) If no -o is given data are 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 consists of the noisy time series.

View the C-sources. View rand.c.

See also addnoise

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