An implementation of
Matrix class represents a mathematical matrix. It provides methods for creating matrices, operating on them arithmetically and algebraically, and determining their mathematical properties (trace, rank, inverse, determinant, eigensystem, etc.).
Vector class represents a mathematical vector, which is useful in its own right, and also constitutes a row or column of a
matrix library comes pre-installed with Ruby. Unless you need recent features, you can simply
require 'matrix' directly, no need to install it.
If you need features that are more recent than the version of Ruby you want to support (check the CHANGELOG), you must use the gem. To do this, add this line to your application's Gemfile or gem's gemspec:
And then execute:
To make sure that the gem takes precedence over the builtin library, call
bundle exec ... (or call
gem 'matrix' explicitly).
require 'matrix' m = [[1, 2], [3, 4]] m.determinant # => -2
After checking out the repo, run
bin/setup to install dependencies. Then, run
rake test to run the tests. You can also run
bin/console for an interactive prompt that will allow you to experiment.
To install this gem onto your local machine, run
bundle exec rake install. To release a new version, update the version number in
version.rb, and then run
bundle exec rake release, which will create a git tag for the version, push git commits and tags, and push the
.gem file to rubygems.org.
Bug reports and pull requests are welcome on GitHub at https://github.com/ruby/matrix.
The gem is available as open source under the terms of the 2-Clause BSD License.