@turf/transform-scale
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    6.5.0 • Public • Published

    @turf/transform-scale

    transformScale

    Scale a GeoJSON from a given point by a factor of scaling (ex: factor=2 would make the GeoJSON 200% larger). If a FeatureCollection is provided, the origin point will be calculated based on each individual Feature.

    Parameters

    • geojson GeoJSON GeoJSON to be scaled
    • factor number of scaling, positive or negative values greater than 0
    • options Object Optional parameters (optional, default {})
      • options.origin (string | Coord) Point from which the scaling will occur (string options: sw/se/nw/ne/center/centroid) (optional, default 'centroid')
      • options.mutate boolean allows GeoJSON input to be mutated (significant performance increase if true) (optional, default false)

    Examples

    var poly = turf.polygon([[[0,29],[3.5,29],[2.5,32],[0,29]]]);
    var scaledPoly = turf.transformScale(poly, 3);
    
    //addToMap
    var addToMap = [poly, scaledPoly];
    scaledPoly.properties = {stroke: '#F00', 'stroke-width': 4};

    Returns GeoJSON scaled 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/transform-scale

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

    $ npm install @turf/turf

    Install

    npm i @turf/transform-scale

    DownloadsWeekly Downloads

    154,721

    Version

    6.5.0

    License

    MIT

    Unpacked Size

    15.9 kB

    Total Files

    7

    Last publish

    Collaborators

    • rowanwins
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    • tcql
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