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Full Discussion: awk matching script not working as expected
Top Forums Shell Programming and Scripting awk matching script not working as expected Post 303014854 by Chubler_XL on Thursday 22nd of March 2018 01:49:16 AM
Old 03-22-2018
How about this:

Code:
#!/usr/bin/awk -f
FNR==1 {file++}
{
  day=$1
  gsub(/-/, " ", day)
  split($2, t, ".")
  gsub(/:/, " ", t[1])
  x=mktime(day " " t[1]) + t[2] / 1000
  if(file==1) srctime[FNR]=x
  else desttime[FNR]=x
  records[file, FNR]=$0
}

END {
   offset=5*60
   max=2*60
   cur=1
   for (rec in srctime) {
       target = srctime[rec] + offset
       offsetmin = target - max
       offsetmax = target + max
       best = 9999999
       found = 0
       while(cur in desttime && desttime[cur] < offsetmax) {
           if (desttime[cur] < target && desttime[cur] > offsetmin &&
               best > target - desttime[cur]) {
                  best= target - desttime[cur]
                  found=cur
           }
           if (desttime[cur] >= target) {
              if(best > desttime[cur] - target) {
                  best=desttime[cur] - target
                  found=cur
               }
               break
           }
           cur++
        }

        if (found)
           print records[1, rec] " " records[2, found]
        else
           print records[1, rec] " NA NA"
    }
}


Result:
Code:
2018-02-16 16:45:29.557 farads 0.0004300000 2018-02-16 16:50:40.486 reactance 0.0002400000
2018-02-16 16:46:09.300 farads 0.0004300000 2018-02-16 16:51:22.525 reactance 0.0005900000
2018-02-16 16:47:10.987 farads 0.0002800000 2018-02-16 16:52:01.997 reactance 0.0003900000
2018-02-16 16:47:51.611 farads 0.0006500000 2018-02-16 16:52:43.612 reactance 0.0005200000
2018-02-16 16:47:51.612 farads 0.0006500000 2018-02-16 16:53:23.550 reactance 0.0003900000
2018-02-16 16:48:34.077 farads 0.0006600000 2018-02-16 16:53:23.550 reactance 0.0003900000
2018-02-16 16:49:17.015 farads 0.0003300000 2018-02-16 16:54:03.276 reactance 0.0005300000
2018-02-16 16:49:59.075 farads 0.0000700000 2018-02-16 16:54:44.223 reactance 0.0003800000
2018-02-16 16:50:40.486 farads 0.0002400000 2018-02-16 16:55:24.769 reactance 0.0003200000
2018-02-16 16:51:22.525 farads 0.0005900000 2018-02-16 16:56:10.028 reactance 0.0002700000
2018-02-16 16:52:01.997 farads 0.0003900000 2018-02-16 16:56:57.624 reactance 0.0000900000
2018-02-16 16:52:43.612 farads 0.0005200000 2018-02-16 16:57:37.387 reactance 0.0003000000
2018-02-16 16:53:23.550 farads 0.0003900000 2018-02-16 16:58:16.929 reactance 0.0005800000
2018-02-16 16:54:03.276 farads 0.0005300000 2018-02-16 16:58:56.961 reactance 0.0003000000



Edit: previous solution could miss closer records that are before previous target this should be more accurate:

Code:
#!/usr/bin/awk -f
FNR==1 {file++}
{
  day=$1
  gsub(/-/, " ", day)
  split($2, t, ".")
  gsub(/:/, " ", t[1])
  x=mktime(day " " t[1]) + t[2] / 1000
  if(file==1) srctime[FNR]=x
  else desttime[FNR]=x
  records[file, FNR]=$0
}

END {
   offset=5*60
   max=2*60
   deststart=0
   for (rec in srctime) {
       target = srctime[rec] + offset
       offsetmin = target - max
       offsetmax = target + max
       best = 9999999
       found = 0
       cur=deststart+1
       while(cur in desttime && desttime[cur] < offsetmax) {
           if (desttime[cur] < target && desttime[cur] > offsetmin &&
               best > target - desttime[cur]) {
                  if( best = 9999999) deststart = cur
                  best= target - desttime[cur]
                  found=cur
           }
           if (desttime[cur] >= target) {
              if(best > desttime[cur] - target) {
                  best=desttime[cur] - target
                  found=cur
               }
               break
           }
           cur++
        }

        if (found)
           print records[1, rec] " " records[2, found]
        else
           print records[1, rec] " NA NA"
    }
}

Last edited by Chubler_XL; 03-22-2018 at 03:02 AM..
This User Gave Thanks to Chubler_XL For This Post:
delbroooks
 

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