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Issue using awk to print min values for unique ids


 
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Top Forums Shell Programming and Scripting Issue using awk to print min values for unique ids
# 8  
I see. To be more specific I need the script to look at each field separately for each unique ID. So the min value for just Field 3 or just Field 4.
# 9  
Quote:
Originally Posted by vgersh99
a bit verbose, but..... sometyhing along these lines.
awk -f ncw.awk myFile where ncw.awk is:
Code:
{
  for(i=3;i<=NF;i++) {
     key[$1]
     if ( $i >0 && (!(($1, i) in f1) || f1[key[$1],i] > $i)) {
       f1[$1,i] = $i
       if (!($1,i) in f2) f2[$1,i] = $2
     }
  }
  nf=i
}
END {
  for( k in key)
    for(i=3; i<= nf; i++) {
      printf("%s%s%s", (i==3)?k OFS f2[k,i]:"", OFS, (i==nf)?f1[k,i] ORS:f1[k,i])
    }
}

results in (given your sample input file):
Code:
01001 012017 10.64 3.96 4.45 3.48 9.58 10.76 4.44 5.03 2.78 1.45 1.26 3.24
01003 011895 6.46 3.53 6.69 4.63 3.54 11.71 7.64 8.02 2.45 3.21 1.35 4.05

Thanks for the help, but this prints out the first line for each unique ID. Not necessarily the min value.

Input
Code:
01001   011895  7.03    2.96    8.36    3.53    3.96    5.40    3.92    3.36    0.73    2.03    1.44    3.66
01001   011896  5.86    5.42    5.54    3.98    3.77    6.24    4.38    2.57    0.82    1.66    2.89    1.94
01001   011897  3.27    6.63    10.94   4.35    0.81    1.57    3.96    5.02    0.87    0.75    1.84    4.38
01001   011898  2.33    2.07    2.60    4.56    0.54    3.13    5.80    6.02    1.51    3.21    6.66    3.91
01001   011899  5.80    6.94    3.35    2.22    2.93    2.31    6.80    2.90    0.63    3.02    1.98    5.25
.....
01003   011895  6.46    3.53    6.69    4.63    3.54    11.71   7.64    8.02    2.45    3.21    1.35    4.05
01003   011896  3.80    5.88    5.63    2.45    2.83    6.98    5.24    5.60    2.90    5.38    4.09    2.45
01003   011897  3.95    6.62    8.19    4.43    1.09    2.44    7.06    14.69   2.08    1.29    2.45    3.91
01003   011898  2.82    4.25    2.04    3.64    0.73    5.87    6.72    11.96   9.90    1.46    7.88    5.09
01003   011899  5.64    4.47    3.37    0.97    1.16    5.90    7.81    6.53    0.31    2.23    3.75    4.79
.....

Output
Code:
01001 011895 7.03 2.96 8.36 3.53 3.96 5.40 3.92 3.36 0.73 2.03 1.44 3.66
01003 011895 6.46 3.53 6.69 4.63 3.54 11.71 7.64 8.02 2.45 3.21 1.35 4.05

# 10  
sorry - my bad. try this version:
Code:
{
  for(i=3;i<=NF;i++) {
     key[$1]
     if ( $i >0 && (!(($1, i) in f1) || f1[$1,i] > $i)) {
       f1[$1,i] = $i
       if (!($1,i) in f2) f2[$1,i] = $2
     }
  }
  nf=i
}
END {
  for( k in key)
    for(i=3; i<= nf; i++) {
      printf("%s%s%s", (i==3)?k OFS f2[k,i]:"", OFS, (i==nf)?f1[k,i] ORS:f1[k,i])
    }
}

# 11  
These appear to be the same. Did I miss something?
# 12  
Adaptation of post #7 for the new requirements:

Code:
awk -v c=4 '
  !($1 in M) {
    M[$1]=$c
  }
  {
    if($c>-99.99 && $c<=M[$1]) {
      M[$1]=$c
      V[$1]=$2
    }
  }
  END {
    for(i in M) print i, M[i], V[i]
  }
' file

c is the column number
This User Gave Thanks to Scrutinizer For This Post:
# 13  
Thanks Scrutinizer. The output is as desired.
# 14  
Quote:
Originally Posted by ncwxpanther
These appear to be the same. Did I miss something?
it's not the same:
Code:
{
  for(i=3;i<=NF;i++) {
     key[$1]
     if ( $i >0 && (!(($1, i) in f1) || f1[$1,i] > $i)) {
       f1[$1,i] = $i
       if (!($1,i) in f2) f2[$1,i] = $2
     }
  }
  nf=i
}
END {
  for( k in key)
    for(i=3; i<= nf; i++) {
      printf("%s%s%s", (i==3)?k OFS f2[k,i]:"", OFS, (i==nf)?f1[k,i] ORS:f1[k,i])
    }
}

given your sample file:
Code:
01001   011895  7.03    2.96    8.36    3.53    3.96    5.40    3.92    3.36    0.73    2.03    1.44    3.66
01001   011896  5.86    5.42    5.54    3.98    3.77    6.24    4.38    2.57    0.82    1.66    2.89    1.94
01001   011897  3.27    6.63    10.94   4.35    0.81    1.57    3.96    5.02    0.87    0.75    1.84    4.38
01001   011898  2.33    2.07    2.60    4.56    0.54    3.13    5.80    6.02    1.51    3.21    6.66    3.91
01001   011899  5.80    6.94    3.35    2.22    2.93    2.31    6.80    2.90    0.63    3.02    1.98    5.25
01003   011895  6.46    3.53    6.69    4.63    3.54    11.71   7.64    8.02    2.45    3.21    1.35    4.05
01003   011896  3.80    5.88    5.63    2.45    2.83    6.98    5.24    5.60    2.90    5.38    4.09    2.45
01003   011897  3.95    6.62    8.19    4.43    1.09    2.44    7.06    14.69   2.08    1.29    2.45    3.91
01003   011898  2.82    4.25    2.04    3.64    0.73    5.87    6.72    11.96   9.90    1.46    7.88    5.09
01003   011899  5.64    4.47    3.37    0.97    1.16    5.90    7.81    6.53    0.31    2.23    3.75    4.79

produces:
Code:
01001 011895 2.33 2.07 2.60 2.22 0.54 1.57 3.92 2.57 0.63 0.75 1.44 1.94
01003 011895 2.82 3.53 2.04 0.97 0.73 2.44 5.24 5.60 0.31 1.29 1.35 2.45


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