使用Geoxml3将kml extendeddata加载到变量中

问题描述

据我所知，Geoxml3有一个内置的功能可以将kml extendeddata 加载到变量中（源代码见下文），但我无法找到解析后访问这些变量的方式。有谁知道该怎么做？谢谢，欢呼声。

（kmz分支的geoxml3.js的第544行）：

  //将扩展数据添加到变量
 var extDataNodes = node.getElementsByTagName（'ExtendedData'）; 
 if（!! extDataNodes&& extDataNodes.length> 0）{
 var dataNodes = extDataNodes [0] .getElementsByTagName（'Data'）; 
 for（var d = 0; d  var dn = dataNodes [d]; 
 var name = dn.getAttribute（'name'）; 
 if（！name）continue; 
 var dName = geoXML3.nodeValue（dn.getElementsByTagName（'displayName'）[0]，name）; 
 var val = geoXML3.nodeValue（dn.getElementsByTagName（'value'）[0]）; 
 
 placemark.vars.val [name] = val; 
 placemark.vars.display [name] = dName; 
} 
} 
  

解决方案

kmz分支版本的geoxml3，扩展数据存储在placemark.vars.val中。bb
$ b $ $ p $ name：Alvarães
percentntil：29.8
total：1699


  var contentString ='< div class =maptab>'+ 
'< h1>' + placemark.name +'< / h1>'+ 
'fora da escola：'+ placemark.vars.val.total +'< br>'
'percentual：'+ placemark.vars.val .percentil + 
'< / div>'; 
 polygonMouseover（placemark.polygon，contentString）; 
  

I understand that Geoxml3 has a built in feature to load kml extendeddata into variables (from its source code - see bellow), but I couldn't find the way to access those variables after parsing. Does anyone know how to do it? Thanks, cheers.

(line 544 of geoxml3.js of kmz branch):

// add extended data to variables
var extDataNodes = node.getElementsByTagName('ExtendedData');
if (!!extDataNodes && extDataNodes.length > 0) {
var dataNodes = extDataNodes[0].getElementsByTagName('Data');
for (var d = 0; d < dataNodes.length; d++) {
var dn    = dataNodes[d];
var name  = dn.getAttribute('name');
if (!name) continue;
var dName = geoXML3.nodeValue(dn.getElementsByTagName('displayName')[0], name);
var val   = geoXML3.nodeValue(dn.getElementsByTagName('value')[0]);

placemark.vars.val[name]     = val;
placemark.vars.display[name] = dName;
}
}

解决方案

In the kmz branch version of geoxml3, the extended data is stored in placemark.vars.val

name: "Alvarães"
percentil: "29.8"
total: "1699"

So, this should work:

    var contentString = '<div class="maptab">'+
        '<h1>'+placemark.name+'</h1>'+
        'fora da escola: '+placemark.vars.val.total+'<br>'
        'percentual: '+placemark.vars.val.percentil+
        '</div>';
    polygonMouseover(placemark.polygon,contentString);

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