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Full Discussion: awk to look up values in File 2 from File 1, & printingNth field of File1 based value of File2 $2
Top Forums Shell Programming and Scripting awk to look up values in File 2 from File 1, & printingNth field of File1 based value of File2 $2 Post 303013957 by samonl on Friday 2nd of March 2018 12:33:18 PM
Old 03-02-2018
awk to look up values in File 2 from File 1, & printingNth field of File1 based value of File2 $2
I have two files which are the output of a multiple choice vocab test (60 separate questions) from 104 people (there are some missing responses) and the question list. I have the item list in one file (File1)

Code:
Item,Stimulus,Choice1,Choice2,Choice3,Choice4,Correct
3100004,HATCHET,tomahawk,pagoda,prosecution,soot,1
3100011,MORSEL,bite,host,marmalade,extortion,1
3100012,PASTIME,interest,miracle,position,homesick,1
3100016,GIST,essence,contempt,policy,fig,1

etc
The actual data is in another (File2)

Code:
Item,Response,TrialOrderRelative,ItemOrder,Accuracy,ID,RT
3100004,1,184,1,1,90915,2243.46
3100004,1,702,1,1,1207MY,3355.45
3100004,3,1031,1,0,120908,5832.49
3100004,1,1405,1,1,123321,2577.53
3100004,4,1963,1,0,17440293,6490.75
3100004,2,2326,1,0,200198,19480.67
3100012,4,2722,1,0,202017,2073.00

etc
All I want to do is print the answer chosen for each item in the File 2. This requires that I a) match $1 of File 2 to File 1, and b) then take the value of $2 in File 2, and print the $2+2 th field of File 1 for the matching record. I have got as far as working out that I need to start with reading both the files in as arrays at the same time but got really lost reading the array section in a 30 year old copy of Aho book from undergraduate days. I would like to learn how to do this but do not understand how to use the $2 to look up a field in File 1. I know how to do the a) part of this but that's not really helping. The output should look like this:
Code:
3100004,1,184,1,1,90915,2243.46,tomahawk
3100004,1,702,1,1,1207MY,3355.45,tomahawk
3100004,3,1031,1,0,120908,5832.49,prosecution
3100004,1,1405,1,1,123321,2577.53,tomahawk
3100004,4,1963,1,0,17440293,6490.75,soot
3100004,2,2326,1,0,200198,19480.67,pagoda
3100012,4,2722,1,0,202017,2073.00,homesick

I would be grateful for all suggestions including pointers to helpful worked examples so I can solve this kind of thing for myself. This post also represents huge frustration with attempts to do this kind of thing with Excel and its lookup functions (it hung and broke). Thank you.
 

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LEARN ABOUT CENTOS

locale::codes::langext

Locale::Codes::LangExt(3)				User Contributed Perl Documentation				 Locale::Codes::LangExt(3)

NAME

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

SYNOPSIS

	  use Locale::Codes::LangExt;

	  $lext = code2langext('acm');		       # $lext gets 'Mesopotamian Arabic'
	  $code = langext2code('Mesopotamian Arabic'); # $code gets 'acm'

	  @codes   = all_langext_codes();
	  @names   = all_langext_names();

DESCRIPTION

       The "Locale::Codes::LangExt" module provides access to standard codes used for identifying language extensions, 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 extensions. 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 = code2langext('acm','alpha');
	  $lext = code2langext('acm',LOCALE_LANGEXT_ALPHA);

       The codesets currently supported are:

       alpha
	   This is the set of three-letter (lowercase) codes from the IANA language registry, such as 'acm' for Mesopotamian Arabic.

	   This is the default code set.

ROUTINES

       code2langext ( CODE [,CODESET] )
       langext2code ( NAME [,CODESET] )
       langext_code2code ( CODE ,CODESET ,CODESET2 )
       all_langext_codes ( [CODESET] )
       all_langext_names ( [CODESET] )
       Locale::Codes::LangExt::rename_langext  ( CODE ,NEW_NAME [,CODESET] )
       Locale::Codes::LangExt::add_langext  ( CODE ,NAME [,CODESET] )
       Locale::Codes::LangExt::delete_langext  ( CODE [,CODESET] )
       Locale::Codes::LangExt::add_langext_alias  ( NAME ,NEW_NAME )
       Locale::Codes::LangExt::delete_langext_alias  ( NAME )
       Locale::Codes::LangExt::rename_langext_code  ( CODE ,NEW_CODE [,CODESET] )
       Locale::Codes::LangExt::add_langext_code_alias  ( CODE ,NEW_CODE [,CODESET] )
       Locale::Codes::LangExt::delete_langext_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 v5.16.3							    2013-02-27						 Locale::Codes::LangExt(3)
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