How to print median values of matrix -awk? Post: 302999599

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Top Forums Shell Programming and Scripting How to print median values of matrix -awk? Post 302999599 by RudiC on Friday 23rd of June 2017 04:54:16 AM

06-23-2017

Registered User

Try this for medians:

Code:

awk -F"\t" '
NR == 1
NR > 1          {for (i=2; i<=NF; i++) print $1, i, $i | "sort -k1,2 -k3bn > TMP"
                }

function PRMED()        {printf TFS "%s", MEDIAN
                         TFS = OFS
                         PRV2 = $2
                         CNT = 0
                        }

END             {while (1 == getline < "TMP")   {if ($1 != PRV1)        {PRMED()
                                                                         printf TRS "%s", $1
                                                                         TRS = ORS
                                                                         PRV1 = $1
                                                                        }
                                                 if ($2 != PRV2)        {PRMED()
                                                                        }
                                                 M[++CNT] = $3
                                                 CH       = int (CNT / 2)
                                                 MEDIAN   = CNT%2?M[CH+1]:(M[CH]+M[CH+1])/2
                                                }
                }
END             {PRMED()
                 printf ORS
                }
' OFS="\t" file
name 	s1	s2	s3	s4
g1	5	7	8	9
g2	8	8	8	8
g3	4	4	7.5	18

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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).

Free Software Foundation					    Nov 3 1999								  IGAWK(1)