Statistics::Descriptive::Smoother(3pm)

Usage

  use Statistics::Descriptive::Smoother;
  my $smoother = Statistics::Descriptive::Smoother->instantiate({
           method   => 'exponential',
           coeff    => 0.5,
           data     => [1, 2, 3, 4, 5],
           samples  => [110, 120, 130, 140, 150],
    });
  my @smoothed_data = $smoother->get_smoothed_data();

Version

version 3.0801

Overview

This module provide methods to smooth the trend of a series of statistical data.

The methods provided are the "Exponential" and the "Weighted Exponential" (see respectively "Statistics::Descriptive::Smoother::Exponential" and "Statistics::Descriptive::Smoother::Weightedexponential" for more details).

This class is just a factory that will instantiate the object to perform the chosen smoothing algorithm.

Methods

Statistics::Descriptive::Smoother->instantiate({});

Create a new Smoother object.

This method require several parameters:

method: Method used for the smoothing. Allowed values are: "exponential" and "weightedexponential"

coeff: Smoothing coefficient. It needs to be in the [0;1] range, otherwise undef will be reutrned. 0 means that the series is not smoothed at all, while 1 the series is universally equal to the initial unsmoothed value.

data: Array ref with the data of the series. At least 2 values are needed to smooth the series, undef is returned otherwise.

samples: Array ref with the samples each data value has been built with. This is an optional parameter since it is not used by all the smoothing algorithm.

$smoother->get_smoothing_coeff();: Returns the smoothing coefficient.

$smoother->set_smoothing_coeff(0.5);: Set the smoothing coefficient value. It needs to be in the [0;1] range, otherwise undef will be reutrned.

Support

Websites

The following websites have more information about this module, and may be of help to you. As always, in addition to those websites please use your favorite search engine to discover more resources.

•

MetaCPAN

A modern, open-source CPAN search engine, useful to view POD in HTML format.

<https://metacpan.org/release/Statistics-Descriptive>

•

RT: CPAN's Bug Tracker

The RT ( Request Tracker ) website is the default bug/issue tracking system for CPAN.

<https://rt.cpan.org/Public/Dist/Display.html?Name=Statistics-Descriptive>

•

CPANTS

The CPANTS is a website that analyzes the Kwalitee ( code metrics ) of a distribution.

<http://cpants.cpanauthors.org/dist/Statistics-Descriptive>

•

CPAN Testers

The CPAN Testers is a network of smoke testers who run automated tests on uploaded CPAN distributions.

<http://www.cpantesters.org/distro/S/Statistics-Descriptive>

•

CPAN Testers Matrix

The CPAN Testers Matrix is a website that provides a visual overview of the test results for a distribution on various Perls/platforms.

<http://matrix.cpantesters.org/?dist=Statistics-Descriptive>

•

CPAN Testers Dependencies

The CPAN Testers Dependencies is a website that shows a chart of the test results of all dependencies for a distribution.

<http://deps.cpantesters.org/?module=Statistics::Descriptive>

Bugs / Feature Requests

Please report any bugs or feature requests by email to "bug-statistics-descriptive at rt.cpan.org", or through the web interface at <https://rt.cpan.org/Public/Bug/Report.html?Queue=Statistics-Descriptive>. You will be automatically notified of any progress on the request by the system.

Source Code

The code is open to the world, and available for you to hack on. Please feel free to browse it and play with it, or whatever. If you want to contribute patches, please send me a diff or prod me to pull from your repository :)

<https://github.com/shlomif/perl-Statistics-Descriptive>

  git clone git://github.com/shlomif/perl-Statistics-Descriptive.git

Copyright and license

This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself.

Releases

7 releases since Debian 7 (Wheezy); the text changed 5 times.

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