Javascript 如何将坐标的JSON数据馈送到turp.polygon？

如何将坐标的JSON数据馈送到turp.polygon

示例：turp.polygon（）；

示例：JSON表单

我的伪代码：不起作用，并返回错误消息“多边形的线性化必须有4个或更多位置。”

---

谢谢。

坐标

属性已经是一个深度嵌套的数组：

"coordinates": [[
  [1.275543, 54.464547], // I want to feed these coordinates
  [1.275543, 54.489271],
  [1.215118, 54.489271],
  [1.215118, 54.464547],
  [1.275543, 54.464547]  
]]

执行此操作时：

var polygon = turf.polygon([[
  json.data.features[0].geometry.coordinates
]], ...

它将决心：

var polygon = turf.polygon([[
  [[
    [1.275543, 54.464547], // I want to feed these coordinates
    [1.275543, 54.489271],
    [1.215118, 54.489271],
    [1.215118, 54.464547],
    [1.275543, 54.464547]  
  ]]
]], ...

您希望在不进行修改的情况下提取并使用原始嵌套数组本身。试试这个：

var polygon = turf.polygon(json.data.features[0].geometry.coordinates, { name: 'poly1', population: 400});

features
属性是数组，而不是object.ops！我忘了包括那个。但仍然有相同的错误消息。谢谢
var polygon = turf.polygon([[
  json.data.features[0].geometry.coordinates
]], ...

var polygon = turf.polygon([[
  [[
    [1.275543, 54.464547], // I want to feed these coordinates
    [1.275543, 54.489271],
    [1.215118, 54.489271],
    [1.215118, 54.464547],
    [1.275543, 54.464547]  
  ]]
]], ...

var polygon = turf.polygon(json.data.features[0].geometry.coordinates, { name: 'poly1', population: 400});