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  • Rui Guo
    Member
    • Apr 2016
    • 18

    #1

    kmer counting software issue

    There are many kmer counting software. If just to find repeats, can I just use someone that can count frequency and can give the kmer position in the genome(or reads), and then align the high frequency kmers? Some software just output the kmer counts, I don't know which software can output the kmer position along with the kmer counts.
  • rhinoceros
    Senior Member
    • Apr 2013
    • 372

    #2
    You can always map the k-mers back to the genome with e.g. bowtie2..
    savetherhino.org

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    • Rui Guo
      Member
      • Apr 2016
      • 18

      #3
      Thank you. I think mapping back is redundant because when counting it can also do that. I will try to find some other ways to do that.

      Comment

      • rhinoceros
        Senior Member
        • Apr 2013
        • 372

        #4
        Originally posted by Rui Guo View Post
        Thank you. I think mapping back is redundant because when counting it can also do that. I will try to find some other ways to do that.
        Saving positional information is a lot of overhead for k-mer counting algorithms so I'm not so sure it has been implemented in any of them..
        savetherhino.org

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        • colindaven
          Senior Member
          • Oct 2008
          • 417

          #5
          For bacterial genomes there is an old program which can do this for 8-14mer kmers called OligoCounter. Not useful for large genomes though (>50 MB?).



          Mapping back to the genome is probably a much quicker option.

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