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How to obtain only positive value in second column [closed]

How to extract the positive numbers in the first column from an output as in the question?Using awk to change an entire column of both positive and negative values, to just negative?Is it possible to add consecutive columns in AWKMerge two files and plus the second column using AWKHow to print first column of next line in current line?How to print a specific column condition using awk?Calculate interval if value in column changesget average for all numbers with irregular columnsHow to obtain the last recently three dates of a file log?How to collapse consecutive numbers into ranges?

.everyoneloves__top-leaderboard:empty,.everyoneloves__mid-leaderboard:empty,.everyoneloves__bot-mid-leaderboard:empty margin-bottom:0;

3

I use this command

awk 'NR%2t=$1;nextprint $1-t,$2'

to get the distance between two consecutive Y points in a file. But I would like to have all positive numbers. How to get that ? like something as modulus.

1577 -46.1492
1577.57 47
1578 -47.6528
1578.87 49
1579 -49.2106
1580 -50.7742
1580.15 51

awk numeric-data

share|improve this question

edited Mar 25 at 9:44

Jeff Schaller♦

47.1k1111 gold badges6868 silver badges153153 bronze badges

asked Mar 25 at 9:31

newstudentnewstudent

4544 bronze badges

closed as unclear what you're asking by Kusalananda♦, jimmij, msp9011, Jeff Schaller♦, Anthony Geoghegan Mar 25 at 15:12

Please clarify your specific problem or add additional details to highlight exactly what you need. As it's currently written, it’s hard to tell exactly what you're asking. See the How to Ask page for help clarifying this question. If this question can be reworded to fit the rules in the help center, please edit the question.

• 
  
  
  

  
  2
  

  
  
  
  
  
  

  
  
  It is unclear (as you can see from the answers) whether the data that you present is input to your existing awk script or output from it.
  
  – Kusalananda♦
  Mar 25 at 9:47
  

  
  
  
  

add a comment | 

3

I use this command

awk 'NR%2t=$1;nextprint $1-t,$2'

to get the distance between two consecutive Y points in a file. But I would like to have all positive numbers. How to get that ? like something as modulus.

1577 -46.1492
1577.57 47
1578 -47.6528
1578.87 49
1579 -49.2106
1580 -50.7742
1580.15 51

awk numeric-data

share|improve this question

edited Mar 25 at 9:44

Jeff Schaller♦

47.1k1111 gold badges6868 silver badges153153 bronze badges

asked Mar 25 at 9:31

newstudentnewstudent

4544 bronze badges

closed as unclear what you're asking by Kusalananda♦, jimmij, msp9011, Jeff Schaller♦, Anthony Geoghegan Mar 25 at 15:12

Please clarify your specific problem or add additional details to highlight exactly what you need. As it's currently written, it’s hard to tell exactly what you're asking. See the How to Ask page for help clarifying this question. If this question can be reworded to fit the rules in the help center, please edit the question.

• 
  
  
  

  
  2
  

  
  
  
  
  
  

  
  
  It is unclear (as you can see from the answers) whether the data that you present is input to your existing awk script or output from it.
  
  – Kusalananda♦
  Mar 25 at 9:47
  

  
  
  
  

add a comment | 

I use this command

awk 'NR%2t=$1;nextprint $1-t,$2'

to get the distance between two consecutive Y points in a file. But I would like to have all positive numbers. How to get that ? like something as modulus.

1577 -46.1492
1577.57 47
1578 -47.6528
1578.87 49
1579 -49.2106
1580 -50.7742
1580.15 51

awk numeric-data

share|improve this question

edited Mar 25 at 9:44

Jeff Schaller♦

47.1k1111 gold badges6868 silver badges153153 bronze badges

asked Mar 25 at 9:31

newstudentnewstudent

4544 bronze badges

awk 'NR%2t=$1;nextprint $1-t,$2'

1577 -46.1492
1577.57 47
1578 -47.6528
1578.87 49
1579 -49.2106
1580 -50.7742
1580.15 51

share|improve this question

edited Mar 25 at 9:44

Jeff Schaller♦

47.1k1111 gold badges6868 silver badges153153 bronze badges

asked Mar 25 at 9:31

newstudentnewstudent

4544 bronze badges

share|improve this question

edited Mar 25 at 9:44

Jeff Schaller♦

47.1k1111 gold badges6868 silver badges153153 bronze badges

asked Mar 25 at 9:31

newstudentnewstudent

4544 bronze badges

edited Mar 25 at 9:44

Jeff Schaller♦

47.1k1111 gold badges6868 silver badges153153 bronze badges

edited Mar 25 at 9:44

Jeff Schaller♦

47.1k1111 gold badges6868 silver badges153153 bronze badges

asked Mar 25 at 9:31

newstudentnewstudent

4544 bronze badges

asked Mar 25 at 9:31

newstudentnewstudent

4544 bronze badges

2 Answers
2

active

oldest

votes

2

Command: awk '$2 !~ /^-/print $0' file

output

1577.57 47
1578.87 49
1580.15 51

share|improve this answer

answered Mar 25 at 9:42

Praveen Kumar BSPraveen Kumar BS

2,16922 gold badges33 silver badges1111 bronze badges

add a comment | 

3

You can replace this:

print $1-t,$2

with this:

if ($2>=0) print $1-t,$2

or,

$2 >= 0 print $1 - t, $2 

share|improve this answer

edited Mar 25 at 9:46

Kusalananda♦

152k1818 gold badges300300 silver badges479479 bronze badges

answered Mar 25 at 9:35

Romeo NinovRomeo Ninov

7,54433 gold badges2121 silver badges2929 bronze badges

add a comment | 

2

Command: awk '$2 !~ /^-/print $0' file

output

1577.57 47
1578.87 49
1580.15 51

share|improve this answer

answered Mar 25 at 9:42

Praveen Kumar BSPraveen Kumar BS

2,16922 gold badges33 silver badges1111 bronze badges

add a comment | 

2

Command: awk '$2 !~ /^-/print $0' file

output

1577.57 47
1578.87 49
1580.15 51

share|improve this answer

answered Mar 25 at 9:42

Praveen Kumar BSPraveen Kumar BS

2,16922 gold badges33 silver badges1111 bronze badges

add a comment | 

Command: awk '$2 !~ /^-/print $0' file

output

1577.57 47
1578.87 49
1580.15 51

share|improve this answer

answered Mar 25 at 9:42

Praveen Kumar BSPraveen Kumar BS

2,16922 gold badges33 silver badges1111 bronze badges

Command: awk '$2 !~ /^-/print $0' file

output

1577.57 47
1578.87 49
1580.15 51

share|improve this answer

answered Mar 25 at 9:42

Praveen Kumar BSPraveen Kumar BS

2,16922 gold badges33 silver badges1111 bronze badges

answered Mar 25 at 9:42

Praveen Kumar BSPraveen Kumar BS

2,16922 gold badges33 silver badges1111 bronze badges

answered Mar 25 at 9:42

Praveen Kumar BSPraveen Kumar BS

2,16922 gold badges33 silver badges1111 bronze badges

3

You can replace this:

print $1-t,$2

with this:

if ($2>=0) print $1-t,$2

or,

$2 >= 0 print $1 - t, $2 

share|improve this answer

edited Mar 25 at 9:46

Kusalananda♦

152k1818 gold badges300300 silver badges479479 bronze badges

answered Mar 25 at 9:35

Romeo NinovRomeo Ninov

7,54433 gold badges2121 silver badges2929 bronze badges

add a comment | 

3

You can replace this:

print $1-t,$2

with this:

if ($2>=0) print $1-t,$2

or,

$2 >= 0 print $1 - t, $2 

share|improve this answer

edited Mar 25 at 9:46

Kusalananda♦

152k1818 gold badges300300 silver badges479479 bronze badges

answered Mar 25 at 9:35

Romeo NinovRomeo Ninov

7,54433 gold badges2121 silver badges2929 bronze badges

add a comment | 

You can replace this:

print $1-t,$2

with this:

if ($2>=0) print $1-t,$2

or,

$2 >= 0 print $1 - t, $2 

share|improve this answer

edited Mar 25 at 9:46

Kusalananda♦

152k1818 gold badges300300 silver badges479479 bronze badges

answered Mar 25 at 9:35

Romeo NinovRomeo Ninov

7,54433 gold badges2121 silver badges2929 bronze badges

print $1-t,$2

if ($2>=0) print $1-t,$2

$2 >= 0 print $1 - t, $2 

share|improve this answer

edited Mar 25 at 9:46

Kusalananda♦

152k1818 gold badges300300 silver badges479479 bronze badges

answered Mar 25 at 9:35

Romeo NinovRomeo Ninov

7,54433 gold badges2121 silver badges2929 bronze badges

edited Mar 25 at 9:46

Kusalananda♦

152k1818 gold badges300300 silver badges479479 bronze badges

edited Mar 25 at 9:46

Kusalananda♦

152k1818 gold badges300300 silver badges479479 bronze badges

answered Mar 25 at 9:35

Romeo NinovRomeo Ninov

7,54433 gold badges2121 silver badges2929 bronze badges

answered Mar 25 at 9:35

Romeo NinovRomeo Ninov

7,54433 gold badges2121 silver badges2929 bronze badges