https://github.com/haoliangyu/geojson-offset

Add coordinate offest to GeoJSON
https://github.com/haoliangyu/geojson-offset

editing geojson

Last synced: about 1 month ago
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Add coordinate offest to GeoJSON

• Host: GitHub
• URL: https://github.com/haoliangyu/geojson-offset
• Owner: haoliangyu
• License: mit
• Created: 2016-12-14T00:26:48.000Z (almost 8 years ago)
• Default Branch: master
• Last Pushed: 2016-12-19T05:13:53.000Z (almost 8 years ago)
• Last Synced: 2024-10-01T09:14:23.415Z (about 1 month ago)
• Topics: editing, geojson
• Language: JavaScript
• Homepage:
• Size: 36.1 KB
• Stars: 0
• Watchers: 2
• Forks: 2
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
# geojson-offset

Add coordinate offest to the GeoJSON

## Installation

``` bash

npm install geojson-offset

```

## Usage

Noted this function will **UPDATE** the input geojson. If there is a need to return a copy of original geojson, please let me know by openning an issue.

`geojson-offset` supports all GeoJSON types:

* FeatureCollection

* Feature

* Geometery

  * Point

  * MultiPoint

  * LineString

  * MultiLineString

  * Polygon

  * MultiPolygon

``` javascript

const offset = require('geojson-offset').offset;

const randomOffset = require('geojson-offset').randomOffset;

let geojson = {

  type: 'FeatureCollection',

  features: [

    {

      type: 'Feature',

      geometry: {

        type: 'Point',

        coordinates: [-78, 48]

      },

      properties: {}

    }

  ]

};

/**

 * Pass the geojson and the x/y coordinate offset

 */

gejson = offset(geojson, -1, 1);

/**

 * Pass the geojson and x/y coordinate offset range. The same offset will be

 * applied to all features in the input GeoJSON.

 */

geojson = randomOffset(geojson, [0, 10], [-10, 10]);

```