Save and load NumPy npy and npz files in Ruby - no Python required
:fire: Uses Numo for blazing performance
Add this line to your application’s Gemfile:
gem "npy"
npy files contain a single array
Save an array
x = Numo::Int32[0..9]
Npy.save("x.npy", x)
Load an npy file
x = Npy.load("x.npy")
Load an npy string
byte_str = File.binread("x.npy")
x = Npy.load_string(byte_str)
npz files contain multiple arrays
Save multiple arrays
x = Numo::Int32[0..9]
y = x * 2
Npy.save_npz("data.npz", x: x, y: y)
Load an npz file
data = Npy.load_npz("data.npz")
Get keys
data.keys
Get an array
data["x"]
Arrays are lazy loaded for performance
View the changelog
Everyone is encouraged to help improve this project. Here are a few ways you can help:
To get started with development:
git clone https://github.com/ankane/npy.git
cd npy
bundle install
bundle exec rake test
FAQs
Unknown package
We found that npy demonstrated a healthy version release cadence and project activity because the last version was released less than a year ago. It has 1 open source maintainer collaborating on the project.
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