1Statistics::DescriptiveU:s:eSrmoCootnhterri(b3u)ted PerlStDaotciusmteinctsa:t:iDoenscriptive::Smoother(3)
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NAME

6       Statistics::Descriptive::Smoother - Base module for smoothing
7       statistical data
8

VERSION

10       version 3.0800
11

SYNOPSIS

13         use Statistics::Descriptive::Smoother;
14         my $smoother = Statistics::Descriptive::Smoother->instantiate({
15                  method   => 'exponential',
16                  coeff    => 0.5,
17                  data     => [1, 2, 3, 4, 5],
18                  samples  => [110, 120, 130, 140, 150],
19           });
20         my @smoothed_data = $smoother->get_smoothed_data();
21

DESCRIPTION

23       This module provide methods to smooth the trend of a series of
24       statistical data.
25
26       The methods provided are the "Exponential" and the "Weighted
27       Exponential" (see respectively
28       "Statistics::Descriptive::Smoother::Exponential" and
29       "Statistics::Descriptive::Smoother::Weightedexponential" for more
30       details).
31
32       This class is just a factory that will instantiate the object to
33       perform the chosen smoothing algorithm.
34

METHODS

36       Statistics::Descriptive::Smoother->instantiate({});
37            Create a new Smoother object.
38
39            This method require several parameters:
40
41            method
42                 Method used for the smoothing. Allowed values are:
43                 "exponential" and "weightedexponential"
44
45            coeff
46                 Smoothing coefficient. It needs to be in the [0;1] range,
47                 otherwise undef will be reutrned.  0 means that the series is
48                 not smoothed at all, while 1 the series is universally equal
49                 to the initial unsmoothed value.
50
51            data Array ref with the data of the series. At least 2 values are
52                 needed to smooth the series, undef is returned otherwise.
53
54            samples
55                 Array ref with the samples each data value has been built
56                 with. This is an optional parameter since it is not used by
57                 all the smoothing algorithm.
58
59       $smoother->get_smoothing_coeff();
60            Returns the smoothing coefficient.
61
62       $smoother->set_smoothing_coeff(0.5);
63            Set the smoothing coefficient value. It needs to be in the [0;1]
64            range, otherwise undef will be reutrned.
65

AUTHOR

67       Fabio Ponciroli
68
70       Copyright(c) 2012 by Fabio Ponciroli.
71

LICENSE

73       This file is licensed under the MIT/X11 License:
74       http://www.opensource.org/licenses/mit-license.php.
75
76       Permission is hereby granted, free of charge, to any person obtaining a
77       copy of this software and associated documentation files (the
78       "Software"), to deal in the Software without restriction, including
79       without limitation the rights to use, copy, modify, merge, publish,
80       distribute, sublicense, and/or sell copies of the Software, and to
81       permit persons to whom the Software is furnished to do so, subject to
82       the following conditions:
83
84       The above copyright notice and this permission notice shall be included
85       in all copies or substantial portions of the Software.
86
87       THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
88       OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
89       MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
90       IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
91       CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
92       TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
93       SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
94

SUPPORT

96   Websites
97       The following websites have more information about this module, and may
98       be of help to you. As always, in addition to those websites please use
99       your favorite search engine to discover more resources.
100
101       •   MetaCPAN
102
103           A modern, open-source CPAN search engine, useful to view POD in
104           HTML format.
105
106           <https://metacpan.org/release/Statistics-Descriptive>
107
108       •   RT: CPAN's Bug Tracker
109
110           The RT ( Request Tracker ) website is the default bug/issue
111           tracking system for CPAN.
112
113           <https://rt.cpan.org/Public/Dist/Display.html?Name=Statistics-Descriptive>
114
115       •   CPANTS
116
117           The CPANTS is a website that analyzes the Kwalitee ( code metrics )
118           of a distribution.
119
120           <http://cpants.cpanauthors.org/dist/Statistics-Descriptive>
121
122       •   CPAN Testers
123
124           The CPAN Testers is a network of smoke testers who run automated
125           tests on uploaded CPAN distributions.
126
127           <http://www.cpantesters.org/distro/S/Statistics-Descriptive>
128
129       •   CPAN Testers Matrix
130
131           The CPAN Testers Matrix is a website that provides a visual
132           overview of the test results for a distribution on various
133           Perls/platforms.
134
135           <http://matrix.cpantesters.org/?dist=Statistics-Descriptive>
136
137       •   CPAN Testers Dependencies
138
139           The CPAN Testers Dependencies is a website that shows a chart of
140           the test results of all dependencies for a distribution.
141
142           <http://deps.cpantesters.org/?module=Statistics::Descriptive>
143
144   Bugs / Feature Requests
145       Please report any bugs or feature requests by email to
146       "bug-statistics-descriptive at rt.cpan.org", or through the web
147       interface at
148       <https://rt.cpan.org/Public/Bug/Report.html?Queue=Statistics-Descriptive>.
149       You will be automatically notified of any progress on the request by
150       the system.
151
152   Source Code
153       The code is open to the world, and available for you to hack on. Please
154       feel free to browse it and play with it, or whatever. If you want to
155       contribute patches, please send me a diff or prod me to pull from your
156       repository :)
157
158       <https://github.com/shlomif/perl-Statistics-Descriptive>
159
160         git clone git://github.com/shlomif/perl-Statistics-Descriptive.git
161

AUTHOR

163       Shlomi Fish <shlomif@cpan.org>
164

BUGS

166       Please report any bugs or feature requests on the bugtracker website
167       <https://github.com/shlomif/perl-Statistics-Descriptive/issues>
168
169       When submitting a bug or request, please include a test-file or a patch
170       to an existing test-file that illustrates the bug or desired feature.
171
173       This software is copyright (c) 1997 by Jason Kastner, Andrea Spinelli,
174       Colin Kuskie, and others.
175
176       This is free software; you can redistribute it and/or modify it under
177       the same terms as the Perl 5 programming language system itself.
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181perl v5.32.1                      2021-01-2S7tatistics::Descriptive::Smoother(3)
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