Question

Takes a set of points and estimates their 'property' values on a grid using the Inverse Distance Weighting (IDW) method.
采用一组点，并估计它们在网格上的“属性”值，使用 反向距离加权(IDW) 方法。

参数

参数	类型	描述
points	FeatureCollection <Point>	with known value
cellSize	number	the distance across each grid point
options	Object	可选参数：见下文

options选项

属性	类型	默认值	描述
gridType	string	square	defines the output format based on a Grid Type (options: 'square'
property	string	elevation	the property name in
units	string	kilometers	used in calculating cellSize, can be degrees, radians, miles, or kilometers
weight	number	1	exponent regulating the distance-decay weighting

返回

FeatureCollection <(Point|Polygon)> - grid of points or polygons with interpolated 'property'

示例

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);