通过Google Maps API v3访问ExtendedData信息 [英] Accessing ExtendedData information via Google Maps API v3

问题描述

我在每个< Placemark> 节点和< ExtendedData> 节点中都有一个KML文件，然后使用键/值对的多个< Data> 节点。我遵循以下示例： http://code.google.com/apis/kml/documentation/extendeddata.html 和 code.google.com/apis/kml/documentation/ kmlelementsinmaps.html建议地图支持KML ExtendedData节点（尽管部分），但是我找不到通过javascript访问ExtendedData对象的方法。我使用的是：

  google.maps.event.addListener（agency_layer，'click'，function（kmlEvent）{
 console.debug（kmlEvent）; 
} 
  

（其中agency_layer是KML对象）。
kmlEvent包含所有的KML特性数据，但不包含extendedData，而我正在摸索我的头。我想让我的KML在语义上合理，而不是将更多数据加载到描述中并稍后解析它javascript。

有没有人有过类似的经历，或者知道如何通过Google Maps API v3访问ExtendedData节点？

解决方案

我在寻找完全相同的东西，我从我找到的信息构建了一个jQuery解决方案 。这是我写的功能。

  function extendedDataToArray（feature）
 {
 var returnArray = new Array（）; 
 $（feature.getKml（））。find（Data）。each（function（）
 {
 returnArray [$（this）.attr（name）] = $ （this）.find（value）.text（）; 
} 
）; 
 return returnArray; 
 
 
 
 
 
 $ p 
该函数返回一个关联数组，其中的键等于数据元素的名称，并将值作为值标签的内容。希望这有助于！
 
I have a KML file which contains within each <Placemark> node an <ExtendedData> node, and then a number of <Data> nodes with key/value pairs. I've followed the examples at: http://code.google.com/apis/kml/documentation/extendeddata.html and code.google.com/apis/kml/documentation/kmlelementsinmaps.html suggests maps do support KML ExtendedData nodes (albeit partially), but I cannot find a way of accessing the ExtendedData object via javascript. I'm using:
google.maps.event.addListener(agency_layer, 'click', function(kmlEvent) {
  console.debug( kmlEvent );
}
(where agency_layer is the KML object).
kmlEvent contains all of the KML feature data, but not the extendedData, and i'm scratching my head. I want to make my KML semantically sensible, rather than loading more data into the description and parsing it later with javascript.

has anyone had a similar experience, or knows how to access ExtendedData nodes via Google Maps API v3?
解决方案
I was looking for the exact same thing. I constructed a jQuery solution from the information I found here.

Since jQuery can parse xml easily, and kml is xml, it works out pretty well. Here's the function I wrote.
function extendedDataToArray(feature)
{
    var returnArray = new Array();
    $(feature.getKml()).find("Data").each(function()
    {
        returnArray[$(this).attr("name")] = $(this).find("value").text();
    }
    );
    return returnArray;
}
The function returns an associative array with keys equal to the names of your data elements, and values as the content of your value tags. Hope this helps!

                        
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