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The inconsistency between the max summed dissimilarity and the denominator calculation is likely:

  1. Issue in the complexity index (when present is max, a. ( present - missing ) / max = present/max_similarity - missing/max_dissim

NGS Complexity Index

NOTE: This is a project in progress. This gem will calculate a sequencing complexity index for BAM files.


Add this line to your application's Gemfile:

gem 'NGSCI'

And then execute:

$ bundle

Or install it yourself as:

$ gem install ngs-ci --pre

Or install manually:

$ git clone
$ cd ngs-ci
$ gem build ngs-ci.gemspec
$ gem install ngs-ci-[Version].gem


  • See --help for details. More to come.


  1. Fork it ( )
  2. Create your feature branch (git checkout -b my-new-feature)
  3. Commit your changes (git commit -am 'Add some feature')
  4. Push to the branch (git push origin my-new-feature)
  5. Create a new Pull Request


GPL v3. See LICENSE.txt for details.