cslearngo / cnpy

library to read/write .npy and .npz files in C/C++

cnpy

Read and write .npy and .npz files in C++. Forked from rogersce/cnpy, added an example project showing how this library can be used as a dependency. For converting .mat files to .npz and vice versa, use npy_mat_npz.

Quick Start

git clone https://github.com/saravanabalagi/cnpy.git
sh build.sh

Usage

For reading data:

• npy_load(f)
• npz_load(f)
• npz_load(f, var)

Once loaded into, say cnpy::NpyArray np_data variable, you can retrieve

• np_data.data<T>() yields data pointer T*, where T can be int, double, etc.
• np_data.shape yields std::vector<size_t> shape;
• np_data.word_size yields size_t word_size;

For saving data:

• npy_save(f, data, shape)
• npz_save(f, var, data, shape)

Example

example shows how to use this lib in your own projects and example.cpp has code to read and write sample numpy arrays.