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Version: 7.3.0

simplify

描述​

¥Description

简化 GeoJSON 对象中的几何图形。使用 simplify-js 的二维版本。

¥Simplifies the geometries in a GeoJSON object. Uses the 2d version of simplify-js.

参数​

¥Parameters

名称类型描述
geojsonGeoJSON要简化的 GeoJSON 对象
options?对象可选参数（默认值：）
options.tolerance?number简化容差（默认值：1）
options.highQuality?boolean使用较慢的算法生成更高质量的简化（默认为 false）
options.mutate?boolean允许修改 GeoJSON 输入（如果为真，性能将显著提升）（默认为假）

返回​

¥Returns

GeoJSON 简化后的 GeoJSON

¥GeoJSON Simplified GeoJSON

示例​

¥Examples

const 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],
  ],
]);
const result0_01 = turf.simplify(geojson, { tolerance: 0.01 });
const result0_005 = turf.simplify(geojson, { tolerance: 0.005 });

安装​

¥Installation

$ npm install @turf/simplify

import { simplify } from "@turf/simplify";
const result = simplify(...);
$ npm install @turf/turf

import * as turf from "@turf/turf";
const result = turf.simplify(...);