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    @turf/simplify
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    6.5.0 • Public • Published

    @turf/simplify

    simplify

    Takes a GeoJSON object and returns a simplified version. Internally uses simplify-js to perform simplification using the Ramer-Douglas-Peucker algorithm.

    Parameters

    • geojson GeoJSON object to be simplified
    • options Object Optional parameters (optional, default {})
      • options.tolerance number simplification tolerance (optional, default 1)
      • options.highQuality boolean whether or not to spend more time to create a higher-quality simplification with a different algorithm (optional, default false)
      • options.mutate boolean allows GeoJSON input to be mutated (significant performance increase if true) (optional, default false)

    Examples

    var geojson = turf.polygon([[
      [-70.603637, -33.399918],
      [-70.614624, -33.395332],
      [-70.639343, -33.392466],
      [-70.659942, -33.394759],
      [-70.683975, -33.404504],
      [-70.697021, -33.419406],
      [-70.701141, -33.434306],
      [-70.700454, -33.446339],
      [-70.694274, -33.458369],
      [-70.682601, -33.465816],
      [-70.668869, -33.472117],
      [-70.646209, -33.473835],
      [-70.624923, -33.472117],
      [-70.609817, -33.468107],
      [-70.595397, -33.458369],
      [-70.587158, -33.442901],
      [-70.587158, -33.426283],
      [-70.590591, -33.414248],
      [-70.594711, -33.406224],
      [-70.603637, -33.399918]
    ]]);
    var options = {tolerance: 0.01, highQuality: false};
    var simplified = turf.simplify(geojson, options);
    
    //addToMap
    var addToMap = [geojson, simplified]

    Returns GeoJSON a simplified GeoJSON


    This module is part of the Turfjs project, an open source module collection dedicated to geographic algorithms. It is maintained in the Turfjs/turf repository, where you can create PRs and issues.

    Installation

    Install this module individually:

    $ npm install @turf/simplify

    Or install the Turf module that includes it as a function:

    $ npm install @turf/turf

    Install

    npm i @turf/simplify

    DownloadsWeekly Downloads

    206,219

    Version

    6.5.0

    License

    MIT

    Unpacked Size

    23.7 kB

    Total Files

    7

    Last publish

    Collaborators

    • twelch
    • jamesmilneruk
    • rowanwins
    • tmcw
    • morganherlocker
    • tcql
    • mdfedderly