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Full Discussion: SMA (Single Moving Average) and Standard Deviation
Top Forums Shell Programming and Scripting SMA (Single Moving Average) and Standard Deviation Post 303003066 by csierra on Thursday 7th of September 2017 09:13:01 AM
Old 09-07-2017
Hammer & Screwdriver SMA (Single Moving Average) and Standard Deviation
Hello Team,

I am using the following awk script to calculate the SMA (Single Moving Average) for an specific period but now I would like to include the standard deviation output.

Could you please help me to modify this awk shell script


Code:
awk -F, -v points=5 '   {   a[NR % points] = $2;    if(NR>=points) {  total_a = 0;    for (i = 0; i < points; ++i)       { total_a = total_a + a[i]; }        print ($1, $2, total_a/points);  }  }' data.csv

Input Data
Code:
Row    Data
1    10.09
2    10.14
3    10.02
4    10.13
5    10.1
6    10.06
7    10.15
8    9.91
9    9.99
10    9.72
11    9.75
12    9.57
13    9.62
14    9.97
15    9.71
16    9.77
17    9.88
18    9.71
19    9.75
20    9.53
21    9.46
22    9.38
23    9.63
24    9.67
25    9.92
26    10.04

Expected Output:

Code:
Row    Data    SMA 5    Standard Deviation 5 Period
5    10.1    10.096    0.042237424
6    10.06    10.09    0.04472136
7    10.15    10.092    0.047074409
8    9.91    10.07    0.085556999
9    9.99    10.042    0.084237759
10    9.72    9.966    0.146232691
11    9.75    9.904    0.158442419
12    9.57    9.788    0.147837749
13    9.62    9.73    0.145464772
14    9.97    9.726    0.138361844
15    9.71    9.724    0.138506318
16    9.77    9.728    0.139484766
17    9.88    9.79    0.123450395
18    9.71    9.808    0.102058807
19    9.75    9.764    0.062481997
20    9.53    9.728    0.113912247
21    9.46    9.666    0.152131522
22    9.38    9.566    0.142632395
23    9.63    9.55    0.129460419
24    9.67    9.534    0.106695829
25    9.92    9.612    0.187339264
26    10.04    9.728    0.231637648

data.xls (28.5 KB) 
standard_deviation.xls (29.5 KB) 
 

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LEARN ABOUT MOJAVE

locale::codes::langfam5.18

Locale::Codes::LangFam(3pm)				 Perl Programmers Reference Guide			       Locale::Codes::LangFam(3pm)

NAME

       Locale::Codes::LangFam - standard codes for language extension identification

SYNOPSIS

	  use Locale::Codes::LangFam;

	  $lext = code2langfam('apa');		       # $lext gets 'Apache languages'
	  $code = langfam2code('Apache languages');    # $code gets 'apa'

	  @codes   = all_langfam_codes();
	  @names   = all_langfam_names();

DESCRIPTION

       The "Locale::Codes::LangFam" module provides access to standard codes used for identifying language families, such as those as defined in
       ISO 639-5.

       Most of the routines take an optional additional argument which specifies the code set to use. If not specified, the default ISO 639-5
       language family codes will be used.

SUPPORTED CODE SETS

       There are several different code sets you can use for identifying language families. A code set may be specified using either a name, or a
       constant that is automatically exported by this module.

       For example, the two are equivalent:

	  $lext = code2langfam('apa','alpha');
	  $lext = code2langfam('apa',LOCALE_LANGFAM_ALPHA);

       The codesets currently supported are:

       alpha
	   This is the set of three-letter (lowercase) codes from ISO 639-5 such as 'apa' for Apache languages.

	   This is the default code set.

ROUTINES

       code2langfam ( CODE [,CODESET] )
       langfam2code ( NAME [,CODESET] )
       langfam_code2code ( CODE ,CODESET ,CODESET2 )
       all_langfam_codes ( [CODESET] )
       all_langfam_names ( [CODESET] )
       Locale::Codes::LangFam::rename_langfam  ( CODE ,NEW_NAME [,CODESET] )
       Locale::Codes::LangFam::add_langfam  ( CODE ,NAME [,CODESET] )
       Locale::Codes::LangFam::delete_langfam  ( CODE [,CODESET] )
       Locale::Codes::LangFam::add_langfam_alias  ( NAME ,NEW_NAME )
       Locale::Codes::LangFam::delete_langfam_alias  ( NAME )
       Locale::Codes::LangFam::rename_langfam_code  ( CODE ,NEW_CODE [,CODESET] )
       Locale::Codes::LangFam::add_langfam_code_alias  ( CODE ,NEW_CODE [,CODESET] )
       Locale::Codes::LangFam::delete_langfam_code_alias  ( CODE [,CODESET] )
	   These routines are all documented in the Locale::Codes::API man page.

SEE ALSO

       Locale::Codes
	   The Locale-Codes distribution.

       Locale::Codes::API
	   The list of functions supported by this module.

       http://www.loc.gov/standards/iso639-5/id.php
	   ISO 639-5 .

AUTHOR

       See Locale::Codes for full author history.

       Currently maintained by Sullivan Beck (sbeck@cpan.org).

COPYRIGHT

	  Copyright (c) 2011-2013 Sullivan Beck

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

perl v5.18.2							    2013-11-04					       Locale::Codes::LangFam(3pm)
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