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fast-alphashape-0.2.0


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توضیحات

A Rust backed implementation for generating 2D alpha shapes from points
ویژگی مقدار
سیستم عامل -
نام فایل fast-alphashape-0.2.0
نام fast-alphashape
نسخه کتابخانه 0.2.0
نگهدارنده []
ایمیل نگهدارنده []
نویسنده -
ایمیل نویسنده Martin Black <18327836+mblackgeo@users.noreply.github.com>
آدرس صفحه اصلی -
آدرس اینترنتی https://pypi.org/project/fast-alphashape/
مجوز -
# fast-alphashape [![PyPI](https://img.shields.io/pypi/v/fast-alphashape?style=for-the-badge)](https://pypi.org/project/fast-alphashape/) [![CI](https://img.shields.io/github/workflow/status/mblackgeo/fast-alphashape/ci?label=CI&style=for-the-badge)](https://github.com/mblackgeo/fast-alphashape/actions) [![Release](https://img.shields.io/github/workflow/status/mblackgeo/fast-alphashape/release?label=RELEASE&style=for-the-badge)](https://github.com/mblackgeo/fast-alphashape/actions) [![Code Style](https://img.shields.io/static/v1?label=code%20style&message=black&color=blue&style=for-the-badge)](https://github.com/psf/black) A Rust backed implementation for generating 2D [alpha shapes](https://en.wikipedia.org/wiki/Alpha_shape) from points. **This project is still a prototype and should not be considered production-ready.** ![Comparison of convex hull versus alpha shape](image.png) Alpha shapes are often used to generalise bounding polygons containing sets of points. The alpha parameter is defined as the value `a`, such that an edge of a disk of radius `1/a` can be drawn between any two edge members of a set of points and still contain all the points. The [convex hull](https://en.wikipedia.org/wiki/Convex_hull), a shape resembling what you would see if you wrapped a rubber band around pegs at all the data points, is an alpha shape where the alpha parameter is equal to zero. ## Installation ```shell pip install fast-alphashape ``` ## Quick start The package provides an `alphashape` function that takes a 2D array of points and an alpha value: ```python import numpy as np from fast_alphashape import alphashape points = np.array( [ (0.0, 0.0), (0.0, 1.0), (1.0, 1.0), (1.0, 0.0), (0.5, 0.25), (0.5, 0.75), (0.25, 0.5), (0.75, 0.5), ] ) alpha_polygon = alphashape(points, alpha=2.0) ``` ## Development Prequisites: * Python (>=3.7) and make * [Rust toolchain](https://rustup.rs/) After cloning the repository, the Makefile includes helpful commands for setting up a development environment, linting, formatting, testing, and benchmarking. Get started as follows: ```shell # setup a new virtual environment python -m venv .venv source .venv/bin/activate # install the development dependencies make install # check other available commands make help ``` Tooling: * Cargo and [Pytest](https://docs.pytest.org/en/6.2.x/) are used for testing the Rust and Python code respectively (see [`/tests`](/tests/)). * Python code is linted using [flake8](https://flake8.pycqa.org/en/latest/) and formatted using [Black](https://github.com/psf/black); rust code with `cargo fmt` and `cargo clippy`. * [pre-commit](https://pre-commit.com/) is used to run these checks locally before files are pushed to git * The [Github Actions pipeline](.github/workflows/ci.yml) runs these checks and tests * [Semantic-release](https://python-semantic-release.readthedocs.io/en/latest/) is used with [conventional commits](https://www.conventionalcommits.org/en/v1.0.0/) for automated releasing to PyPI ## Credits * This project is largely a Rust port of the [Alpha Shape Toolbox](https://github.com/bellockk/alphashape) by Ken Bellock * Image credit: Sigbert, [CC BY-SA 3.0](https://creativecommons.org/licenses/by-sa/3.0), via [Wikimedia Commons](https://commons.wikimedia.org/wiki/File:ScagnosticsBase.svg)


نیازمندی

مقدار نام
- numpy~=1.0
- shapely~=1.0
- geopandas


زبان مورد نیاز

مقدار نام
>=3.7 Python


نحوه نصب


نصب پکیج whl fast-alphashape-0.2.0:

    pip install fast-alphashape-0.2.0.whl


نصب پکیج tar.gz fast-alphashape-0.2.0:

    pip install fast-alphashape-0.2.0.tar.gz