Print 1st column of 1st row and 2nd column of last row, where last column has same value












0















Input:



0.016   0.032   1  
0.032 0.048 1
0.048 0.064 1
0.064 0.08 1
0.08 0.096 1
0.096 0.112 1
0.112 0.128 0
0.128 0.144 0
0.144 0.16 0
0.16 0.176 0
0.176 0.192 0
0.192 0.208 0


Desired output:



0.016 0.112 1  
0.112 0.208 0









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  • 3





    What have you tried? How did it fail? It's unclear how you would like to rearrange the file, please try to describe it in other words.

    – choroba
    1 hour ago











  • It tried using awk and keeping the first column and the last. I think looking at input and the desired output makes it quite clear

    – aaa
    1 hour ago
















0















Input:



0.016   0.032   1  
0.032 0.048 1
0.048 0.064 1
0.064 0.08 1
0.08 0.096 1
0.096 0.112 1
0.112 0.128 0
0.128 0.144 0
0.144 0.16 0
0.16 0.176 0
0.176 0.192 0
0.192 0.208 0


Desired output:



0.016 0.112 1  
0.112 0.208 0









share|improve this question









New contributor




aaa is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
















  • 3





    What have you tried? How did it fail? It's unclear how you would like to rearrange the file, please try to describe it in other words.

    – choroba
    1 hour ago











  • It tried using awk and keeping the first column and the last. I think looking at input and the desired output makes it quite clear

    – aaa
    1 hour ago














0












0








0








Input:



0.016   0.032   1  
0.032 0.048 1
0.048 0.064 1
0.064 0.08 1
0.08 0.096 1
0.096 0.112 1
0.112 0.128 0
0.128 0.144 0
0.144 0.16 0
0.16 0.176 0
0.176 0.192 0
0.192 0.208 0


Desired output:



0.016 0.112 1  
0.112 0.208 0









share|improve this question









New contributor




aaa is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.












Input:



0.016   0.032   1  
0.032 0.048 1
0.048 0.064 1
0.064 0.08 1
0.08 0.096 1
0.096 0.112 1
0.112 0.128 0
0.128 0.144 0
0.144 0.16 0
0.16 0.176 0
0.176 0.192 0
0.192 0.208 0


Desired output:



0.016 0.112 1  
0.112 0.208 0






bash shell-script text-processing






share|improve this question









New contributor




aaa is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.











share|improve this question









New contributor




aaa is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.









share|improve this question




share|improve this question








edited 28 mins ago









PRY

2,55831026




2,55831026






New contributor




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Check out our Code of Conduct.









asked 2 hours ago









aaaaaa

1




1




New contributor




aaa is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
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New contributor





aaa is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.






aaa is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.








  • 3





    What have you tried? How did it fail? It's unclear how you would like to rearrange the file, please try to describe it in other words.

    – choroba
    1 hour ago











  • It tried using awk and keeping the first column and the last. I think looking at input and the desired output makes it quite clear

    – aaa
    1 hour ago














  • 3





    What have you tried? How did it fail? It's unclear how you would like to rearrange the file, please try to describe it in other words.

    – choroba
    1 hour ago











  • It tried using awk and keeping the first column and the last. I think looking at input and the desired output makes it quite clear

    – aaa
    1 hour ago








3




3





What have you tried? How did it fail? It's unclear how you would like to rearrange the file, please try to describe it in other words.

– choroba
1 hour ago





What have you tried? How did it fail? It's unclear how you would like to rearrange the file, please try to describe it in other words.

– choroba
1 hour ago













It tried using awk and keeping the first column and the last. I think looking at input and the desired output makes it quite clear

– aaa
1 hour ago





It tried using awk and keeping the first column and the last. I think looking at input and the desired output makes it quite clear

– aaa
1 hour ago










2 Answers
2






active

oldest

votes


















0














Perl to the rescue!



perl -ane '
sub out { print "@_n" }
if ($F[2] != $three) {
out($one, $two, $three) if defined $one;
($one, $three) = @F[0, 2];
}
$two = $F[1];
END { out($one, $two, $three) }
' < input > output




  • -n reads the input line by line and runs the code for each line;


  • -a splits each line into the @F array on whitespace;

  • the if defined $one skips outputing the first line (it's third column is different to the previous one, but there's nothing to output yet);

  • the END block is needed to print the final block






share|improve this answer

































    0














    I did it using awk:



    awk 'BEGIN{f=0;OFS=" ";t=0;}  {if(f == 0 && $3 == 1) {ff=$1;f=1;next} if(f==1 && $3 == 1) {r=$2;}
    if(t == 0 && $3 == 0) {print ff,r,1;ff=$1;t=1;next} if(t==1 && $3 == 0) {r=$2;}} END{print ff,r,0}' file


    It seems large but approach is simple, check if last column is 1 or 0, and then print 1st column of 1st line and 2nd column of last line.



    Shorter Version:



    awk 'BEGIN{f=0;OFS=" ";t=0;}  {if($3 == 1) {if(f==0){ff=$1;f=1;next} else{r=$2;}}
    else{if(t==0){print ff,r,1;ff=$1;t=1;next} else{r=$2;}}} END{print ff,r,0}' file


    Initially f and t has value 0, then for the first time $3==0 then ff will be equal to first column and f=1, and for further lines we will take r=$2. Similarly for $3==0.






    share|improve this answer

























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      2 Answers
      2






      active

      oldest

      votes








      2 Answers
      2






      active

      oldest

      votes









      active

      oldest

      votes






      active

      oldest

      votes









      0














      Perl to the rescue!



      perl -ane '
      sub out { print "@_n" }
      if ($F[2] != $three) {
      out($one, $two, $three) if defined $one;
      ($one, $three) = @F[0, 2];
      }
      $two = $F[1];
      END { out($one, $two, $three) }
      ' < input > output




      • -n reads the input line by line and runs the code for each line;


      • -a splits each line into the @F array on whitespace;

      • the if defined $one skips outputing the first line (it's third column is different to the previous one, but there's nothing to output yet);

      • the END block is needed to print the final block






      share|improve this answer






























        0














        Perl to the rescue!



        perl -ane '
        sub out { print "@_n" }
        if ($F[2] != $three) {
        out($one, $two, $three) if defined $one;
        ($one, $three) = @F[0, 2];
        }
        $two = $F[1];
        END { out($one, $two, $three) }
        ' < input > output




        • -n reads the input line by line and runs the code for each line;


        • -a splits each line into the @F array on whitespace;

        • the if defined $one skips outputing the first line (it's third column is different to the previous one, but there's nothing to output yet);

        • the END block is needed to print the final block






        share|improve this answer




























          0












          0








          0







          Perl to the rescue!



          perl -ane '
          sub out { print "@_n" }
          if ($F[2] != $three) {
          out($one, $two, $three) if defined $one;
          ($one, $three) = @F[0, 2];
          }
          $two = $F[1];
          END { out($one, $two, $three) }
          ' < input > output




          • -n reads the input line by line and runs the code for each line;


          • -a splits each line into the @F array on whitespace;

          • the if defined $one skips outputing the first line (it's third column is different to the previous one, but there's nothing to output yet);

          • the END block is needed to print the final block






          share|improve this answer















          Perl to the rescue!



          perl -ane '
          sub out { print "@_n" }
          if ($F[2] != $three) {
          out($one, $two, $three) if defined $one;
          ($one, $three) = @F[0, 2];
          }
          $two = $F[1];
          END { out($one, $two, $three) }
          ' < input > output




          • -n reads the input line by line and runs the code for each line;


          • -a splits each line into the @F array on whitespace;

          • the if defined $one skips outputing the first line (it's third column is different to the previous one, but there's nothing to output yet);

          • the END block is needed to print the final block







          share|improve this answer














          share|improve this answer



          share|improve this answer








          edited 41 mins ago

























          answered 56 mins ago









          chorobachoroba

          26.7k44975




          26.7k44975

























              0














              I did it using awk:



              awk 'BEGIN{f=0;OFS=" ";t=0;}  {if(f == 0 && $3 == 1) {ff=$1;f=1;next} if(f==1 && $3 == 1) {r=$2;}
              if(t == 0 && $3 == 0) {print ff,r,1;ff=$1;t=1;next} if(t==1 && $3 == 0) {r=$2;}} END{print ff,r,0}' file


              It seems large but approach is simple, check if last column is 1 or 0, and then print 1st column of 1st line and 2nd column of last line.



              Shorter Version:



              awk 'BEGIN{f=0;OFS=" ";t=0;}  {if($3 == 1) {if(f==0){ff=$1;f=1;next} else{r=$2;}}
              else{if(t==0){print ff,r,1;ff=$1;t=1;next} else{r=$2;}}} END{print ff,r,0}' file


              Initially f and t has value 0, then for the first time $3==0 then ff will be equal to first column and f=1, and for further lines we will take r=$2. Similarly for $3==0.






              share|improve this answer






























                0














                I did it using awk:



                awk 'BEGIN{f=0;OFS=" ";t=0;}  {if(f == 0 && $3 == 1) {ff=$1;f=1;next} if(f==1 && $3 == 1) {r=$2;}
                if(t == 0 && $3 == 0) {print ff,r,1;ff=$1;t=1;next} if(t==1 && $3 == 0) {r=$2;}} END{print ff,r,0}' file


                It seems large but approach is simple, check if last column is 1 or 0, and then print 1st column of 1st line and 2nd column of last line.



                Shorter Version:



                awk 'BEGIN{f=0;OFS=" ";t=0;}  {if($3 == 1) {if(f==0){ff=$1;f=1;next} else{r=$2;}}
                else{if(t==0){print ff,r,1;ff=$1;t=1;next} else{r=$2;}}} END{print ff,r,0}' file


                Initially f and t has value 0, then for the first time $3==0 then ff will be equal to first column and f=1, and for further lines we will take r=$2. Similarly for $3==0.






                share|improve this answer




























                  0












                  0








                  0







                  I did it using awk:



                  awk 'BEGIN{f=0;OFS=" ";t=0;}  {if(f == 0 && $3 == 1) {ff=$1;f=1;next} if(f==1 && $3 == 1) {r=$2;}
                  if(t == 0 && $3 == 0) {print ff,r,1;ff=$1;t=1;next} if(t==1 && $3 == 0) {r=$2;}} END{print ff,r,0}' file


                  It seems large but approach is simple, check if last column is 1 or 0, and then print 1st column of 1st line and 2nd column of last line.



                  Shorter Version:



                  awk 'BEGIN{f=0;OFS=" ";t=0;}  {if($3 == 1) {if(f==0){ff=$1;f=1;next} else{r=$2;}}
                  else{if(t==0){print ff,r,1;ff=$1;t=1;next} else{r=$2;}}} END{print ff,r,0}' file


                  Initially f and t has value 0, then for the first time $3==0 then ff will be equal to first column and f=1, and for further lines we will take r=$2. Similarly for $3==0.






                  share|improve this answer















                  I did it using awk:



                  awk 'BEGIN{f=0;OFS=" ";t=0;}  {if(f == 0 && $3 == 1) {ff=$1;f=1;next} if(f==1 && $3 == 1) {r=$2;}
                  if(t == 0 && $3 == 0) {print ff,r,1;ff=$1;t=1;next} if(t==1 && $3 == 0) {r=$2;}} END{print ff,r,0}' file


                  It seems large but approach is simple, check if last column is 1 or 0, and then print 1st column of 1st line and 2nd column of last line.



                  Shorter Version:



                  awk 'BEGIN{f=0;OFS=" ";t=0;}  {if($3 == 1) {if(f==0){ff=$1;f=1;next} else{r=$2;}}
                  else{if(t==0){print ff,r,1;ff=$1;t=1;next} else{r=$2;}}} END{print ff,r,0}' file


                  Initially f and t has value 0, then for the first time $3==0 then ff will be equal to first column and f=1, and for further lines we will take r=$2. Similarly for $3==0.







                  share|improve this answer














                  share|improve this answer



                  share|improve this answer








                  edited 26 mins ago

























                  answered 38 mins ago









                  PRYPRY

                  2,55831026




                  2,55831026






















                      aaa is a new contributor. Be nice, and check out our Code of Conduct.










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