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Full Discussion: Transpose column to row - awk
Top Forums Shell Programming and Scripting Transpose column to row - awk Post 302838519 by theflamingmoe on Tuesday 30th of July 2013 02:29:12 AM
Old 07-30-2013
Transpose column to row - awk
Hi there,

I have a small csv file example below:
Code:
 
source,cu_001,cu_001_volume,cu_001_mass,cu_002,cu_002_volume,cu_002_mass,cu_003,cu_003_volume,cu_003_mass
ja116,1.33,3024000,9374400,1.54,3026200,9375123,1.98,3028000,9385512

I want to transpose columns to rows starting at the second column and incrementing every third column. Desired output would be:

Code:
 
cu_001,1.33
cu_002,1.54
cu_003,1.98

My attempt is as follows:
Code:
 
gawk -F"," '{for (i=2; i<=NF; i+=3) col[i] = col[i] "," $i} END {for (i=2; i<=NF; i+=3) {print col[i]}}' OFS=, input_file.csv | gawk -F"," 'FNR != 1 {print $2","$3}' OFS=, > output_file.csv

However, the output I get is:
Code:
 
cu_002,1.54
cu_003,1.98

It's missing:
Code:
 
cu_001,1.33

Any help would be appreciatedSmilie

---------- Post updated at 07:29 AM ---------- Previous update was at 06:41 AM ----------

I figured it out. I just needed to get rid of FNR != 1. Edited code is:

Code:
 
gawk -F"," '{for (i=2; i<=NF; i+=3) col[i] = col[i] "," $i} END {for (i=2; i<=NF; i+=3) {print col[i]}}' OFS=, input_file.csv | gawk -F"," '{print $2","$3}' OFS=, > output_file.csv

 

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LEARN ABOUT MOJAVE

locale::codes::langvar

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

NAME

       Locale::Codes::LangVar - standard codes for language variation identification

SYNOPSIS

	  use Locale::Codes::LangVar;

	  $lvar = code2langvar('acm');		       # $lvar gets 'Mesopotamian Arabic'
	  $code = langvar2code('Mesopotamian Arabic'); # $code gets 'acm'

	  @codes   = all_langvar_codes();
	  @names   = all_langvar_names();

DESCRIPTION

       The "Locale::Codes::LangVar" module provides access to standard codes used for identifying language variations, such as those as defined in
       the IANA language registry.

       Most of the routines take an optional additional argument which specifies the code set to use. If not specified, the default IANA language
       registry codes will be used.

SUPPORTED CODE SETS

       There are several different code sets you can use for identifying language variations. 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:

	  $lvar = code2langvar('en','alpha-2');
	  $lvar = code2langvar('en',LOCALE_CODE_ALPHA_2);

       The codesets currently supported are:

       alpha
	   This is the set of alphanumeric codes from the IANA language registry, such as 'arevela' for Eastern Armenian.

	   This code set is identified with the symbol "LOCALE_LANGVAR_ALPHA".

	   This is the default code set.

ROUTINES

       code2langvar ( CODE [,CODESET] )
       langvar2code ( NAME [,CODESET] )
       langvar_code2code ( CODE ,CODESET ,CODESET2 )
       all_langvar_codes ( [CODESET] )
       all_langvar_names ( [CODESET] )
       Locale::Codes::LangVar::rename_langvar  ( CODE ,NEW_NAME [,CODESET] )
       Locale::Codes::LangVar::add_langvar  ( CODE ,NAME [,CODESET] )
       Locale::Codes::LangVar::delete_langvar  ( CODE [,CODESET] )
       Locale::Codes::LangVar::add_langvar_alias  ( NAME ,NEW_NAME )
       Locale::Codes::LangVar::delete_langvar_alias  ( NAME )
       Locale::Codes::LangVar::rename_langvar_code  ( CODE ,NEW_CODE [,CODESET] )
       Locale::Codes::LangVar::add_langvar_code_alias  ( CODE ,NEW_CODE [,CODESET] )
       Locale::Codes::LangVar::delete_langvar_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.iana.org/assignments/language-subtag-registry
	   The IANA language subtag registry.

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							    2014-01-06					       Locale::Codes::LangVar(3pm)
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