interpolate

描述

¥Description

Takes a set of points and estimates their 'property' values on a grid using the 反距离加权 (IDW) 方法.

¥Takes a set of points and estimates their 'property' values on a grid using the Inverse Distance Weighting (IDW) method.

参数

¥Parameters

名称	类型	描述
points	FeatureCollection<点>	已知值
cellSize	number	the distance across each grid point
options?	对象	可选参数（默认 ）
options.gridType?	string	defines the output format based on a Grid Type (options: 'square' | 'point' | 'hex' | 'triangle') (default 'square')
options.property?	string	the property name in points from which z-values will be pulled, zValue fallbacks to 3rd coordinate if no property exists.(默认 'elevation')
options.units?	string	used in calculating cellSize, can be degrees, radians, miles, or kilometers (default 'kilometers')
options.weight?	number	exponent regulating the distance-decay weighting (default 1)
options.bbox?	BBox	Bounding Box Array [west, south, east, north] associated with the FeatureCollection.(默认 bbox(points))

返回

¥Returns

FeatureCollection<点 | 多边形> grid of points or polygons with interpolated 'property'

¥FeatureCollection<Point | Polygon> grid of points or polygons with interpolated 'property'

示例

¥Examples

var points = turf.randomPoint(30, { bbox: [50, 30, 70, 50] });

// add a random property to each point
turf.featureEach(points, function (point) {
  point.properties.solRad = Math.random() * 50;
});
var options = { gridType: "points", property: "solRad", units: "miles" };
var grid = turf.interpolate(points, 100, options);

安装

¥Installation

$ npm install @turf/interpolate

import { interpolate } from "@turf/interpolate";
const result = interpolate(...);

$ npm install @turf/turf

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