KBE3D / KBCore / turf / length

函数: length()

length(geojson: GeometryCollection<Geometry> | Feature<any, GeoJsonProperties> | FeatureCollection<any, GeoJsonProperties>, options?: { units?: Units; }): number

Function

Takes a GeoJSON and measures its length in the specified units, (Multi)Point's distance are ignored.

参数

geojson

GeoJSON to measure

GeometryCollection<Geometry> | Feature<any, GeoJsonProperties> | FeatureCollection<any, GeoJsonProperties>

options?

Optional parameters

units?

Units

Supports all valid Turf Units

.

返回

number

length of GeoJSON

示例

var line = turf.lineString([[115, -32], [131, -22], [143, -25], [150, -34]]);
var length = turf.length(line, {units: 'miles'});

//addToMap
var addToMap = [line];
line.properties.distance = length;