Question

我正在使用Ym4r并希望在我的地图上添加折线。

这有效：

polyline = GPolyline.new([[27.4037755983,89.4263076782],[27.5155793659,89.3245124817]],"#ff0000",3,1.0)
@map.record_init @map.add_overlay(polyline)

但这不是：

polystring = "[27.4037755983,89.4263076782],[27.5155793659,89.3245124817]"
polyline = GPolyline.new([polystring],"#ff0000",3,1.0)
@map.record_init @map.add_overlay(polyline)

知道为什么吗？问候 Arwed

Answer 1

从给出的代码中可以看出，GPolyline.new接受第一个参数作为数组（数组的aray），所以试试这个

polystring = [[27.4037755983,89.4263076782],[27.5155793659,89.3245124817]]
polyline = GPolyline.new(polystring,"#ff0000",3,1.0)
@map.record_init @map.add_overlay(polyline)

也

   polystring = "[27.4037755983,89.4263076782],[27.5155793659,89.3245124817]"
   arr1= [polystring]
   arr2= [[27.4037755983,89.4263076782],[27.5155793659,89.3245124817]]

then arr1[0] = "[27.4037755983,89.4263076782],[27.5155793659,89.3245124817]" where as 
     arr2[0] = [27.4037755983,89.4263076782]

RoR - 谷歌地图中的折线

1 个答案: