How to obtain only positive value in second column [on hold]

I use this command

awk 'NR%2{t=$1;next}{print $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

edited yesterday

Jeff Schaller

43.9k1161141

asked yesterday

newstudent

262

put on hold as unclear what you're asking by Kusalananda, jimmij, msp9011, Jeff Schaller, Anthony Geoghegan 22 hours ago

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
yesterday

add a comment |

I use this command

awk 'NR%2{t=$1;next}{print $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

edited yesterday

Jeff Schaller

43.9k1161141

asked yesterday

newstudent

262

put on hold as unclear what you're asking by Kusalananda, jimmij, msp9011, Jeff Schaller, Anthony Geoghegan 22 hours ago

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
yesterday

add a comment |

I use this command

awk 'NR%2{t=$1;next}{print $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

edited yesterday

Jeff Schaller

43.9k1161141

asked yesterday

newstudent

262

I use this command

awk 'NR%2{t=$1;next}{print $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

edited yesterday

Jeff Schaller

43.9k1161141

asked yesterday

newstudent

262

edited yesterday

Jeff Schaller

43.9k1161141

asked yesterday

newstudent

262

edited yesterday

Jeff Schaller

43.9k1161141

edited yesterday

Jeff Schaller

43.9k1161141

edited yesterday

Jeff Schaller

43.9k1161141

asked yesterday

newstudent

262

asked yesterday

newstudent

262

asked yesterday

newstudent

262

put on hold as unclear what you're asking by Kusalananda, jimmij, msp9011, Jeff Schaller, Anthony Geoghegan 22 hours ago

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
yesterday

add a comment |

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
yesterday

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
yesterday

add a comment |

2 Answers
2

active

oldest

votes

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



output



1577.57 47

1578.87 49

1580.15 51

answered yesterday

Praveen Kumar BS

1,6821311

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 }

edited yesterday

Kusalananda

138k17258426

answered yesterday

Romeo Ninov

6,86432129

add a comment |

2 Answers
2

active

oldest

votes

2 Answers
2

active

oldest

votes

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



output



1577.57 47

1578.87 49

1580.15 51

answered yesterday

Praveen Kumar BS

1,6821311

add a comment |

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



output



1577.57 47

1578.87 49

1580.15 51

answered yesterday

Praveen Kumar BS

1,6821311

add a comment |

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



output



1577.57 47

1578.87 49

1580.15 51

answered yesterday

Praveen Kumar BS

1,6821311

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



output



1577.57 47

1578.87 49

1580.15 51

answered yesterday

Praveen Kumar BS

1,6821311

answered yesterday

Praveen Kumar BS

1,6821311

answered yesterday

Praveen Kumar BS

1,6821311

answered yesterday

Praveen Kumar BS

1,6821311

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 }

edited yesterday

Kusalananda

138k17258426

answered yesterday

Romeo Ninov

6,86432129

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 }

edited yesterday

Kusalananda

138k17258426

answered yesterday

Romeo Ninov

6,86432129

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 }

edited yesterday

Kusalananda

138k17258426

answered yesterday

Romeo Ninov

6,86432129

You can replace this:

{print $1-t,$2}

with this:

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

or,

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

edited yesterday

Kusalananda

138k17258426

answered yesterday

Romeo Ninov

6,86432129

edited yesterday

Kusalananda

138k17258426

edited yesterday

Kusalananda

138k17258426

edited yesterday

Kusalananda

138k17258426

answered yesterday

Romeo Ninov

6,86432129

answered yesterday

Romeo Ninov

6,86432129

answered yesterday

Romeo Ninov

6,86432129

add a comment |

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