How to compare the values of a column in awk in a same file and consecutive lines..


 
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# 1  
Old 04-04-2012
How to compare the values of a column in awk in a same file and consecutive lines..

I would like to compare the values of 2nd column of consecutive lines of same file in such a way so that if the difference between first value and second value is more than 100 it should print complete line else ignore line.

Input File
==========
Code:
PDB 2500
RTDB 123
RTDB-EAGLE 122
VSCCP 2565

Desired Output:
===============
Code:
PDB 2500 (i.e. difference between 2500 and 123 is greater than 100 here)
RTDB-EAGLE 122 (i.e. difference between 122 and 2565 is greater than 100 here)

Thanks..

Last edited by radoulov; 04-04-2012 at 08:46 AM.. Reason: Use code tags, please!
# 2  
Old 04-04-2012
Code:
awk 'NR % 2 != 0 {a=$1; b=$2} NR % 2 == 0 {if (b - $2 > 100 || $2 - b > 100){print a,b}}' inputfile

This User Gave Thanks to balajesuri For This Post:
# 3  
Old 04-04-2012
Another one:
Code:
awk '{p=$0; v=$2; getline; d=$2 - v} d > 100 || d < -100 {print p}' file

This User Gave Thanks to Franklin52 For This Post:
# 4  
Old 04-04-2012
Code:
awk 'NR > 1 {
  x = s - $2
  if ((x > 0 ? x : -x) > 100)
    print f, s
  }
{ 
  f = $1; s = $2 
  }' infile

This User Gave Thanks to radoulov For This Post:
# 5  
Old 04-04-2012
And another one:
Code:
awk '($2-p)^2>10000 && s{print s}{s=$0;p=$2}' infile

This User Gave Thanks to Scrutinizer For This Post:
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