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I have a file like this.

chr1    14969   14830   2   100(26) 100(31) 100(46) 100(13) 100(26) 100(30) 100(31) 100(36) 100(38)
chr1    15795   15039   2   100(3)  100(4)  100(4)  100(3)  100(6)  100(4)  100(2)  100(6)  100(6)
chr1    16606   15948   2   80(4)   *(0)    *(0)    100(1)  75(3)   100(3)  66.67(2)    100(3)  *(0)
chr1    16606   16311   2   20(1)   *(0)    *(0)    *(0)    25(1)   *(0)    33.33(1)    *(0)    100(1)
chr1    16853   16766   2   *(0)    *(0)    *(0)    *(0)    *(0)    *(0)    100(1)  *(0)    100(2)
chr1    16857   16766   2   100(2)  100(5)  100(5)  100(1)  100(2)  100(2)  100(2)  100(4)  100(2)
chr1    17232   17056   2   100(2)  100(4)  100(8)  100(2)  100(2)  100(7)  100(6)  100(5)  100(3)
chr1    17525   17369   2   *(0)    *(0)    100(2)  *(0)    *(0)    *(0)    *(0)    *(0)    *(0)
chr1    17605   17056   1   50(9)   38.89(7)    57.89(11)   30(3)   *(0)    *(0)    40.74(11)   65.52(19)   57.14(16)
chr1    17605   17369   1   50(9)   61.11(11)   42.11(8)    70(7)   100(3)  100(8)  59.26(16)   34.48(10)   42.86(12)

I want to swap column 3 with column 2 and also if column 4 is a 2 replace it with - else with +. The output should look like this.

I would like to do this in awk. I tried this to swap the columns. Also I want header line in my output as it is

awk -F '\t' -v OFS="\t" 'NR > 1{a=$2; $2=$3; $3=a;} 1' file

How can I change the column 4 to + and - depending upon whether it is 1 or 2 and then print whatever number of columns I have after 4 th column?

output

chr1    14969   14830   -   100(26) 100(31) 100(46) 100(13) 100(26) 100(30) 100(31) 100(36) 100(38)
chr1    15795   15039   -   100(3)  100(4)  100(4)  100(3)  100(6)  100(4)  100(2)  100(6)  100(6)
chr1    16606   15948   -   80(4)   *(0)    *(0)    100(1)  75(3)   100(3)  66.67(2)    100(3)  *(0)
chr1    16606   16311   -   20(1)   *(0)    *(0)    *(0)    25(1)   *(0)    33.33(1)    *(0)    100(1)
chr1    16853   16766   -   *(0)    *(0)    *(0)    *(0)    *(0)    *(0)    100(1)  *(0)    100(2)
chr1    16857   16766   -   100(2)  100(5)  100(5)  100(1)  100(2)  100(2)  100(2)  100(4)  100(2)
chr1    17232   17056   -   100(2)  100(4)  100(8)  100(2)  100(2)  100(7)  100(6)  100(5)  100(3)
chr1    17525   17369   -   *(0)    *(0)    100(2)  *(0)    *(0)    *(0)    *(0)    *(0)    *(0)
chr1    17605   17056   +   50(9)   38.89(7)    57.89(11)   30(3)   *(0)    *(0)    40.74(11)   65.52(19)   57.14(16)
chr1    17605   17369   +   50(9)   61.11(11)   42.11(8)    70(7)   100(3)  100(8)  59.26(16)   34.48(10)   42.86(12)

Thanks

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2
  • Hi, I have up voted most of the answers. Wasn't aware how to accept it. Doing it now. But if you look , I have up voted most of the answers.
    – user3138373
    Dec 2, 2016 at 17:44
  • Sorry didn't know about accepting the answer, thought up voting an answer meant acceptance :(
    – user3138373
    Dec 2, 2016 at 17:50

1 Answer 1

Reset to default
2

With the following awk script named for example script.awk:

{
    temp=$2
    $2=$3
    $3=temp
    if ( $4 == 2 ) {
        $4="-"
    } else {
        $4="+"
    }
    print
    temp=''
}

The following appears to do what you want:

$ awk -F '\t' -v OFS='\t' -f script.awk input
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2
  • Can you tell the use of temp='' at the end. Also after seeing your code this works for me on command line awk -F '\t' -v OFS="\t" 'NR==1{next};{a=$2; $2=$3; $3=a; if( $4 == 2 ) { $4="-"} else {$4="+"} } 1'
    – user3138373
    Dec 2, 2016 at 18:03
  • 2
    clearing out temp is just a sanity thing to make sure that it's not left set to accidentally clutter later things. It would certainly work as a one-(very long)-liner, but I thought writing it out would make it simpler to understand how it works.
    – DopeGhoti
    Dec 2, 2016 at 18:08

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