bingalee has asked for the wisdom of the Perl Monks concerning the following question:
I have a file and i need to find the reverse complement only of every 2nd line- basically of every even line. How do i go about it?
Here"s what the file looks like
@HWI-ST1023:184:C1V8LACXX:7:1101:1142:2247 2:N:0:TGACCA GTAGGGGCTGCGCGAACGCAAACCCCCGCTGCCACAAATGATCGTCGGACTGTAGAACTCTGAACGTGTA +GATCTCGGTGGCCGCCGTATCATTAAAAAAA + ?1=DBB@DCFFFFIGIIII6DGHHIII6@=AEEDDEEC;@C>@?(;;B;@B?9BCDAA3>(:@@CB+8(9 +>@:@CCBB289(259@B9B8?A:@C@>CC@B @HWI-ST1023:184:C1V8LACXX:7:1101:1450:2022 2:N:0:TGACCA ACGTGCCCTCGGCCAGAAGGCTTGGGGCGCAACTTGCGTTCAAAGACTCGATGGTTCACGGGATTCTGCA +ATTCACACCAAGTATCGCATTTCGCTACGTT + ?@@DDDFFADFFHIJIIFG>FHIJJJJJGIIBH=DHGHHDDFFF;AEAC?=>CD-:@CDBDBDBDD>CDD +D:ACDCDDDDD?(4>CBBD?@DDDDDDDD8? @HWI-ST1023:184:C1V8LACXX:7:1101:1457:2047 2:N:0:TGACCA GCGTCGCCAGCACAGAGGCCATGCGATCCGTCGAGTTATCATGAATCATCAGAGCAACGGGCAGAGCCCG +CGTCGACCTTTTATCTAATAAATGCGTCCCT + @CCDFFFFGHHHHJIIIJJIJJJJIIJJJJFHIBFBFHIGJJIGI@GHGGEHHHHHHFFDDABDDDDDDD +DDDDBDBBBDCCCCCDDDDCDDEECB8<@DD @HWI-ST1023:184:C1V8LACXX:7:1101:1476:2196 2:N:0:TGACCA GATTGGGGCTGCATTCCCAAACAACCCGACTCGTAGACAGCGCCTCGTGGTGCGACAGGGTCCGGGCACG +ACGGGGCTCTCACCCTCTCTGGCGCCCCTTT + C@CFFFFFHHHHHJJJJJJJJJJJJJJJIJJJJGHIIGEGGIJJIIICHH?@DDCDDBDD9CDBBDDDDD +BDDDDDDDDDCDDDD?BCDCCCDD@BDDDDD
Thanks in advance guys
EDIT
I'm facing specific problems in performing the reverse complement only on every other lines.
Actually I need to find reverse complement of every second line and JUST THE REVERSE of the fourth line
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Replies are listed 'Best First'. | |
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Re: find reverse complement of every 2nd line
by choroba (Cardinal) on Jul 09, 2013 at 23:49 UTC | |
Re: find reverse complement of every 2nd line
by davido (Cardinal) on Jul 09, 2013 at 22:20 UTC | |
by bingalee (Acolyte) on Jul 09, 2013 at 23:12 UTC | |
by LanX (Saint) on Jul 09, 2013 at 23:27 UTC | |
by syphilis (Archbishop) on Jul 09, 2013 at 23:40 UTC | |
Re: find reverse complement of every 2nd line
by rjt (Curate) on Jul 09, 2013 at 23:39 UTC | |
Re: find reverse complement of every 2nd line
by BrowserUk (Patriarch) on Jul 09, 2013 at 22:42 UTC | |
Re: find reverse complement of every 2nd line
by jeffa (Bishop) on Jul 09, 2013 at 22:44 UTC |
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