# length
Takes a GeoJSON and measures its length in the specified units, (Multi)Point 's distance are ignored.
采用GeoJSON并以指定的单位度量其长度,忽略(Multi)点的距离。
参数
参数 | 类型 | 描述 |
---|---|---|
geojson | GeoJSON | GeoJSON to measure |
options | Object | Optional parameters: see below |
options选项
属性 | 类型 | 默认值 | 描述 |
---|---|---|---|
units | string | kilometers | can be degrees, radians, miles, or kilometers |
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'});
