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Full Discussion: Get min and max value in column
Top Forums Shell Programming and Scripting Get min and max value in column Post 302934606 by RavinderSingh13 on Monday 9th of February 2015 08:13:05 AM
Old 02-09-2015
Hello jiam912,

Could you please try following and let me know if this helps.
Code:
wk '{A[substr($0,1,5)+0]=A[substr($0,1,5)+0]>=substr($0,6)+0?A[substr($0,1,5)+0]:substr($0,6)+0;B[substr($0,1,5)+0]=B[substr($0,1,5)+0]<=substr($0,6)+0 && B[substr($0,1,5)+0]?B[substr($0,1,5)+0]:substr($0,6)} END{print "MAX values:";for(i in A){print i OFS A[i]};print "MIN values:";for(j in B){print j OFS B[j]}}' Input_file

Output is as follows.
Code:
MAX values:
51000 10012
51020 10012
MIN values:
51000 10002
51020 10002

EDIT: You can try following also to get output in requested form.
Code:
awk '{A[substr($0,1,5)+0]=A[substr($0,1,5)+0]>=substr($0,6)+0?A[substr($0,1,5)+0]:substr($0,6)+0;B[substr($0,1,5)+0]=B[substr($0,1,5)+0]<=substr($0,6)+0 && B[substr($0,1,5)+0]?B[substr($0,1,5)+0]:substr($0,6)} END{print "VALUE MAX MIN";for(i in A){print i OFS A[i] OFS B[i]}}' OFS="\t"  Input_file

EDIT: Adding a nonone liner form of solution.
Code:
awk '{
          A[substr($0,1,5)+0]=A[substr($0,1,5)+0]>=substr($0,6)+0?A[substr($0,1,5)+0]:substr($0,6)+0;
          B[substr($0,1,5)+0]=B[substr($0,1,5)+0]<=substr($0,6)+0 && B[substr($0,1,5)+0]?B[substr($0,1,5)+0]:substr($0,6)
       }
END {
          print "VALUE MAX MIN";
          for(i in A)
       {
          print i OFS A[i] OFS B[i]
       }
       }
    ' OFS="\t"  Input_file

Output will be as follows.
Code:
VALUE MAX MIN
51000 10012 10002
51020 10012 10002


Thanks,
R. Singh
Last edited by RavinderSingh13; 02-09-2015 at 09:26 AM.. Reason: Added one more solution now + added one liner form of solution now
This User Gave Thanks to RavinderSingh13 For This Post:
jiam912
 

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