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Full Discussion: Finding indices in an array nearest to a set of values
Top Forums Shell Programming and Scripting Finding indices in an array nearest to a set of values Post 302538351 by kristinu on Tuesday 12th of July 2011 05:15:35 PM
Old 07-12-2011
Finding indices in an array nearest to a set of values
I have an two arrays. One array BINDIST consists of fences. I have another array XOFFS.

Eg
Code:
BINDIST = 0 10 20 30 40 50 60

Code:
XOFFS = 2 3 4 23 25 28 55 58

I want to find to find the indices of values in XOFFS that are closest to each BINDIST.

My idea is to do as follows

I create array XMIDS such that

Code:
XMIDS(I) = ( BINDIST(I) + BINDIST(I+1) ) / 2, for I = 1 to NBINDIST-1

Then I check values in XOFFS such that

I find all XOFFS between BINDIST(1) and XMID(1), and choose among these, the closest to BINDIST(1)
Save in VALS(1)

I find all XOFFS between XMIDS(I) and XMIDS(I+1) , and choose among these, the closest to BINDIST(I+1), for I = 1 to NBINDIST-2
Save in VALS(I+1)

I find all XOFFS between XMIDS(NBINDIST-1) and BINDIST(NBINDIST) , and choose among these, the closest to BINDIST(NBINDIST)
Save in VALS(NBINDIST)

If I don't find any XOFFS if the regions described, I return ZERO to the corresponding VALS.

Result should be

Code:
VALS = 2 0 23 28 0 55 58

Last edited by kristinu; 07-12-2011 at 07:51 PM..
 

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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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