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Numo::NArray is an Numerical N-dimensional Array class for fast processing and easy manipulation of multi-dimensional numerical data, similar to numpy.ndarray. This project is the successor to Ruby/NArray.

All documents are primitive.

• Numo::NArray API Doc
• Numo::NArray vs numpy
• Numo::NArray vs ndarray
• Numo::NArray Overview (in Japanese)

• Numo::Linalg - Linear Algebra library with LAPACK.
• Numo::GSL - Ruby interface for GSL (GNU Scientific Library).
• Numo::FFTW - Ruby/Numo interface to FFTW (A Discrete Fourier Transform library.
• Numo::FFTE - Ruby interface for FFTE (A Fast Fourier Transform library with radix-2,3,5).
• Numo::Gnuplot - Simple and easy-to-use Gnuplot interface.

Ruby ver 2.2 and later.

apt install -y git ruby gcc ruby-dev rake make
gem install specific_install
gem specific_install https://github.com/ruby-numo/numo-narray.git

An example

[1] pry(main)> require "numo/narray"
=> true
[2] pry(main)> a = Numo::DFloat.new(3,5).seq
=> Numo::DFloat#shape=[3,5]
[[0, 1, 2, 3, 4],
 [5, 6, 7, 8, 9],
 [10, 11, 12, 13, 14]]
[3] pry(main)> a.shape
=> [3, 5]
[4] pry(main)> a.ndim
=> 2
[5] pry(main)> a.class
=> Numo::DFloat
[6] pry(main)> a.size
=> 15

For more examples, check out the narray version of 100 numpy exercises.

• Wiki version of the 100 exercises
• Reproducible version of the 100 exercises (With this, you can try narray without creating an environment locally.)

git clone https://github.com/ruby-numo/numo-narray
cd numo-narray
bundle install
bundle exec rake compile

bundle exec rake test

Tips: You may run tests defined in a specified line as:

bundle exec ruby test/bit_test.rb --location 27