https://github.com/xtensor-stack/zarray

Dynamically typed N-D expression system based on xtensor
https://github.com/xtensor-stack/zarray

multidimensional-arrays numpy xtensor

Last synced: 1 day ago
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Dynamically typed N-D expression system based on xtensor

• Host: GitHub
• URL: https://github.com/xtensor-stack/zarray
• Owner: xtensor-stack
• License: bsd-3-clause
• Created: 2020-11-09T13:49:07.000Z (about 4 years ago)
• Default Branch: master
• Last Pushed: 2021-10-20T15:19:28.000Z (about 3 years ago)
• Last Synced: 2024-05-09T15:56:21.289Z (6 months ago)
• Topics: multidimensional-arrays, numpy, xtensor
• Language: C++
• Homepage:
• Size: 126 KB
• Stars: 25
• Watchers: 5
• Forks: 6
• Open Issues: 8
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
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Dynamically typed N-D expression system based on [xtensor](thhps://github.com/xtensor-stack/xtensor).

## Introduction

`zarray` is a dynamically typed N-D expression system built on top of [xtensor](thhps://github.com/xtensor-stack/xtensor).

## Installation

### Package managers

We provide a package for the mamba (or conda) package manager:

```bash

mamba install -c conda-forge zarray

```

### Install from sources

`zarray` is a header-only library.

You can directly install it from the sources:

```bash

cmake -D CMAKE_INSTALL_PREFIX=your_install_prefix

make install

```

## Dependencies

`zarray` depends on `xtensor` and `nlohmann_json`:

| `zarray` | `xtensor` | `nlohmann_json` |

|----------|-----------|-----------------|

|  master  |  0.23.8   |  3.2.0          |

|  0.1.0   |  0.23.8   |  3.2.0          |

|  0.0.6   |  0.23.8   |  3.2.0          |

## Usage

**Initialize a 2-D array and compute the sum of one of its rows and a 1-D array.**

```cpp

#include 

xt::zarray arr1 =

  {{1.0, 2.0, 3.0},

   {4.0, 5.0, 6.0},

   {7.0, 8.0, 9.0}};

xt::zarray arr2 =

  {5.0, 6.0, 7.0};

xt::zarray res = xt::strided_view(arr1, {1, xt::all()}) + arr2;

std::cout << res << std::endl;

```

Outputs:

```

{7, 11, 14}

```

**Initialize a 1-D array and reshape it inplace.**

```cpp

#include 

xt::zarray arr =

  {1, 2, 3, 4, 5, 6, 7, 8, 9};

arr.reshape({3, 3});

std::cout << arr << std::endl;

```

Outputs:

```

{{1, 2, 3},

 {4, 5, 6},

 {7, 8, 9}}

```

## License

We use a shared copyright model that enables all contributors to maintain the

copyright on their contributions.

This software is licensed under the BSD-3-Clause license. See the

[LICENSE](LICENSE) file for details.