Taking largest (negative) number from column of coordinates and adding positive form to every other Post: 302561899

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Top Forums Shell Programming and Scripting Taking largest (negative) number from column of coordinates and adding positive form to every other Post 302561899 by crunchgargoyle on Wednesday 5th of October 2011 01:19:12 PM

10-05-2011

Registered User

I apologise for the confusion: I treated the four rows independently.

What I want to do is take the largest negative numbers of columns 6-8, make them positive, and add that positive number to every single number in their respective columns.

---------- Post updated at 06:19 PM ---------- Previous update was at 06:13 PM ----------

Quote:

Originally Posted by vgersh99

nawk -f crunch.awk myFile
crunch.awk:

Code:

BEGIN{OFS="\t"; ARGV[ARGC++] = ARGV[1] }
function abs(i) {return (i<0)?-i:i}

FNR==NR{
  for(i=1;i<=NF;i++)
    if ($i<0)
      m[i]=($i<m[i])?$i:m[i]
  next
}
{
  for(i=1;i<=NF;i++)
    if ($i<0)
     $i+=abs(m[i])
  print
}

Thank you very much vgersh99 - that's doing almost exactly what I want. The only tiny thing is that even when numbers are positive in the column, I need them to have the largest negative number added to them if a negative number exists in that column.

I must apologise for these repeated requests and for not explaining myself clearly in the first instance.

crunchgargoyle

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LEARN ABOUT DEBIAN

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)

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