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Full Discussion: Averaging segments
Top Forums Shell Programming and Scripting Averaging segments Post 302353687 by ripat on Wednesday 16th of September 2009 01:34:43 AM
Old 09-16-2009
For longer range it is easier to iterate through the fields to calculate the sum. And also check if you really have *exactly* 40 1's in your test file.

Code:
awk -v r=40 '{for(i=r;i<=NF;i+=r){for(j=0;j<r;j++){sum+=$(i-j)}printf "%s ", sum/r;sum=0}}' file



---------- Post updated at 07:34 AM ---------- Previous update was at 07:21 AM ----------

Or in a more readable way if you prefer (I do!)

Code:
awk -v r=40 '{
    for(i=r;i<=NF;i+=r){
	for(j=0;j<r;j++){
	    sum+=$(i-j)
	}
	printf "%s ", sum/r
	sum=0
    }
}' file

 

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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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