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Full Discussion: How to reference 2 dimensional array in awk?
Top Forums Shell Programming and Scripting How to reference 2 dimensional array in awk? Post 302775867 by Corona688 on Tuesday 5th of March 2013 02:09:00 PM
Old 03-05-2013
awk does not actually have two-dimensional arrays; it handles two indexes by squeezing them into a single string. As such, your first loop will work but may look weird; the SUBSEP character which it puts between them defaults to a nonprinting ASCII character but can be anything you set it to.

I don't know of a way to iterate over only part of an array. The best I think you can do is iterate over the whole array, and ignore the parts you don't want.

Code:
for(X in ARR) {
        split(X, Q, SUBSEP);
        if(Q[1] != "5") continue;

        print Q[1], Q[2], ARR[X];
}

This User Gave Thanks to Corona688 For This Post:
littlewenwen
 

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LEARN ABOUT CENTOS

clacp2.f

clacp2.f(3)							      LAPACK							       clacp2.f(3)

NAME

       clacp2.f -

SYNOPSIS

   Functions/Subroutines
       subroutine clacp2 (UPLO, M, N, A, LDA, B, LDB)
	   CLACP2 copies all or part of a real two-dimensional array to a complex array.

Function/Subroutine Documentation
   subroutine clacp2 (characterUPLO, integerM, integerN, real, dimension( lda, * )A, integerLDA, complex, dimension( ldb, * )B, integerLDB)
       CLACP2 copies all or part of a real two-dimensional array to a complex array.

       Purpose:

	    CLACP2 copies all or part of a real two-dimensional matrix A to a
	    complex matrix B.

       Parameters:
	   UPLO

		     UPLO is CHARACTER*1
		     Specifies the part of the matrix A to be copied to B.
		     = 'U':	 Upper triangular part
		     = 'L':	 Lower triangular part
		     Otherwise:  All of the matrix A

	   M

		     M is INTEGER
		     The number of rows of the matrix A.  M >= 0.

	   N

		     N is INTEGER
		     The number of columns of the matrix A.  N >= 0.

	   A

		     A is REAL array, dimension (LDA,N)
		     The m by n matrix A.  If UPLO = 'U', only the upper trapezium
		     is accessed; if UPLO = 'L', only the lower trapezium is
		     accessed.

	   LDA

		     LDA is INTEGER
		     The leading dimension of the array A.  LDA >= max(1,M).

	   B

		     B is COMPLEX array, dimension (LDB,N)
		     On exit, B = A in the locations specified by UPLO.

	   LDB

		     LDB is INTEGER
		     The leading dimension of the array B.  LDB >= max(1,M).

       Author:
	   Univ. of Tennessee

	   Univ. of California Berkeley

	   Univ. of Colorado Denver

	   NAG Ltd.

       Date:
	   September 2012

       Definition at line 105 of file clacp2.f.

Author
       Generated automatically by Doxygen for LAPACK from the source code.

Version 3.4.2							  Tue Sep 25 2012						       clacp2.f(3)
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