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Full Discussion: awk? adjacency matrix to adjacency list / correlation matrix to list
Top Forums Shell Programming and Scripting awk? adjacency matrix to adjacency list / correlation matrix to list Post 302560857 by agama on Saturday 1st of October 2011 08:55:53 PM
Old 10-01-2011
I've assumed that your input file is a plain ascii file that looks like this:

Code:
         AA     AB      AC      BB      ZZ
AA      1       0       0.5     0       0.7
AB      0       1       0.3     0       0
AC      0       0       1       0       0.1
BB      0       0       0       1       0
ZZ      0       0       0       0       1

columns are tab or space separated. If you want to separate them with some other character that'd work, you'll just need to invoke awk with the -F option that supplies the separator character.

then this small awk programme will generate output like you've indicated:
Code:
#!/usr/bin/env ksh

awk '
    NR == 1 {       # read col headers
        for( i = 1; i <= NF; i++ )
            col_lab[i+1] = $(i);
        next;
    }

    {
        for( i = 2; i <= NF; i++ )
            if( $(i)+0 > 0 )
                printf( "%s (gg) %s  = %s\n", $1, col_lab[i], $(i) );
    }
' input-file-name

I replaced the ... with BB just to have a col/row label. The programme will work with any number of rows/columns. Running the sample file above, yields this output:

Code:
AA (gg) AA  = 1
AA (gg) AC  = 0.5
AA (gg) ZZ  = 0.7
AB (gg) AB  = 1
AB (gg) AC  = 0.3
AC (gg) AC  = 1
AC (gg) ZZ  = 0.1
BB (gg) BB  = 1
ZZ (gg) ZZ  = 1

This User Gave Thanks to agama For This Post:
stonemonkey
 

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LEARN ABOUT OPENSOLARIS

igawk

IGAWK(1)							 Utility Commands							  IGAWK(1)

NAME

       igawk - gawk with include files

SYNOPSIS

       igawk [ all gawk options ] -f program-file [ -- ] file ...
       igawk [ all gawk options ] [ -- ] program-text file ...

DESCRIPTION

       Igawk is a simple shell script that adds the ability to have ``include files'' to gawk(1).

       AWK programs for igawk are the same as for gawk, except that, in addition, you may have lines like

	      @include getopt.awk

       in your program to include the file getopt.awk from either the current directory or one of the other directories in the search path.

OPTIONS

       See gawk(1) for a full description of the AWK language and the options that gawk supports.

EXAMPLES

       cat << EOF > test.awk
       @include getopt.awk

       BEGIN {
	    while (getopt(ARGC, ARGV, "am:q") != -1)
		 ...
       }
       EOF

       igawk -f test.awk

SEE ALSO

       gawk(1)

       Effective AWK Programming, Edition 1.0, published by the Free Software Foundation, 1995.

AUTHOR

       Arnold Robbins (arnold@skeeve.com).

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +--------------------+-----------------+
       |  ATTRIBUTE TYPE    | ATTRIBUTE VALUE |
       +--------------------+-----------------+
       |Availability	    | SUNWgawk	      |
       +--------------------+-----------------+
       |Interface Stability | Volatile	      |
       +--------------------+-----------------+
NOTES

       Source for gawk is available on http://opensolaris.org.

Free Software Foundation					    Nov 3 1999								  IGAWK(1)
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