# geojson-rewind

**Repository Path**: mirrors_TrySound/geojson-rewind

## Basic Information

- **Project Name**: geojson-rewind
- **Description**: enforce polygon ring winding order for geojson
- **Primary Language**: Unknown
- **License**: ISC
- **Default Branch**: main
- **Homepage**: None
- **GVP Project**: No

## Statistics

- **Stars**: 0
- **Forks**: 0
- **Created**: 2020-10-13
- **Last Updated**: 2025-09-06

## Categories & Tags

**Categories**: Uncategorized

**Tags**: None

## README

[![Build Status](https://travis-ci.org/mapbox/geojson-rewind.png)](https://travis-ci.org/mapbox/geojson-rewind)

# geojson-rewind

The [GeoJSON](https://tools.ietf.org/html/rfc7946) specification is [picky about winding order](https://tools.ietf.org/html/rfc7946#section-3.1.6).

This helps you generate compliant Polygon and MultiPolygon geometries. Furthermore it lets you use [Canvas](http://www.bit-101.com/blog/?p=3702) and other drawing libraries's default behavior to color the interior rings of Polygon and MultiPolygon features.

## Usage

As NPM module:

    npm install --save @mapbox/geojson-rewind

As a console utility:

    # install
    npm install -g @mapbox/geojson-rewind
    # use
    geojson-rewind foo.geojson

As a browser library: [geojson-rewind.js](https://bundle.run/geojson-rewind)

## API

`rewind(geojson, clockwise)`

Given a GeoJSON FeatureCollection, Feature, or Geometry, return a version
with inner and outer rings of different winding orders.

If `clockwise` is `true`, the outer ring is clockwise, otherwise
it is counterclockwise.