如何使用Google Maps API v.3将最近的标记找到可见地图区域中的已知点？ [英] How to get the nearest marker to a know point in the visible map area with Google Maps API v.3?

问题描述

我已阅读此问题，但我有有些遗憾适用于我的情况，因为我有很多标记（atm〜5000，每天都在增长）。

在我的应用程序中，用户将他的标记（称为标记A ）点击地图或通过地址进行地理编码;我必须知道在标记A的特定半径内是否有标记。

正如我所说，我无法遍历所有标记，它可能会杀死用户浏览器，如果可能的话，我很乐意避免Ajax请求来搜索我的数据库。

其实我通过 MarkerManager

有没有办法在地图可见区域的标记之间进行搜索？

解决方案

，我以迭代解决方案结束（ demo here ）。

为了减少要迭代的项目数量，我以状态为基础进行分割（目前已被捕获），也许将来我可以增加更多的分割。

如果它对其他人有用，我的'解决方案'意味着一个数组像：

  places = {
it：[
Rome ，
Venice
]，
fr：[
Paris，
Lyon
]，
es ：[
Madrid，
Barcelona，
Girona

} 
  

使用用户标记的Google地理编码可以获取状态（'fr'，'it'）查找地点的位置。

i've already read this question, but i have some regrets to apply in my situation becose i have many markers (atm ~5000, grown everyday).

In my application the user place his marker (lets call it marker A) clicking the map or via a geocode by address; I have to know if there is a marker in a specific radius of marker A.

As i said, i cant iterate throught all the markers, it will probably kill the user browser, and if possible i'll love to avoid ajax requests to search into my database.

Actually i insert the markers on the map via MarkerManager

Is there a way to search only between the markers in the map's visible area?

解决方案

After many many research, i ended with the iteration solution (demo here).

To decrease the number of items to iterate with, i divide in base of the state (at the moment is enaught), maybe in the future i can add further divisions.

If it can be usefull to someone else, my 'solution' implies an array like:

places = {
    "it":[
        "Rome",
        "Venice"
    ],
    "fr":[
        "Paris",
        "Lyon"
    ],
    "es":[
        "Madrid",
        "Barcelona",
        "Girona"
    ]
}

And a google geocode with the user marker coords to get the state ('fr', 'it') where to look for places.

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