谷歌地球为什么要改变KML多边形坐标？

Question

我的目标是能够使用KML文件在谷歌地球的定义区域上绘制一个阴影多边形。我已经创建了一个KML文档与一个地方标志和一个多边形所需的坐标，并能够导入到谷歌我的地图文件和显示多边形。然而，当我用谷歌地球打开同一个文件时，坐标似乎被不同地解析，多边形也不正确（见图）。有什么我错过了我的KML文件，导致谷歌地球这样做？

这些是原始文件坐标。

<coordinates>
    149.02126, -36.489864, 100
    149.3816, -36.31477, 100
    149.25783, -36.134285, 100
    148.9647, -36.4074, 100
    149.02126, -36.489864, 100
</coordinates>

如果我从google earth复制多边形并将其粘贴到文本文件中作为KML，我会得到以下坐标

<coordinates>
    149.02126,-36.489864,100 
    149.3816,0,0 
    -36.31477,100,0 
    149.25783,-36.134285,100 
    148.9647,-36.4074,100 
    149.02126,-36.489864,100 
</coordinates>

完整的原始KML文件：

<?xml version="1.0" encoding="UTF-8"?>
<kml xmlns="http://www.opengis.net/kml/2.2">
   <Document>
      <Style id="examplePolyStyle">
         <PolyStyle>
            <color>7f0000ff</color>
            <colorMode>random</colorMode>
            <fill>1</fill>
            <outline>1</outline>
         </PolyStyle>
      </Style>
      <Placemark>
         <name>ID: AU201502070705001Issued: 2015-02-07T07:53:00.000Z</name>
         <description>Begins: 2015-02-07T07:53:00.000ZEnds: 2015-02-07T08:38:00.000Z</description>
         <styleUrl>#examplePolyStyle</styleUrl>
         <Polygon>
            <outerBoundaryIs>
               <LinearRing>
                  <coordinates>149.02126, -36.489864, 100 149.3816, -36.31477, 100 149.25783, -36.134285, 100 148.9647, -36.4074, 100 149.02126, -36.489864, 100</coordinates>
               </LinearRing>
            </outerBoundaryIs>
         </Polygon>
      </Placemark>
   </Document>
</kml>    

从Google Earth复制的完整KML文件

<?xml version="1.0" encoding="UTF-8"?>
<kml xmlns="http://www.opengis.net/kml/2.2" xmlns:gx="http://www.google.com/kml/ext/2.2" xmlns:kml="http://www.opengis.net/kml/2.2" xmlns:atom="http://www.w3.org/2005/Atom">
<Document>
    <name>Latest_Single_noCommaNoSpaces.kml</name>
    <Style id="examplePolyStyle">
        <PolyStyle>
            <color>7f0000ff</color>
            <colorMode>random</colorMode>
        </PolyStyle>
    </Style>
    <Placemark>
        <name>ID: AU201502070705001Issued: 2015-02-07T07:53:00.000Z</name>
        <description>Begins: 2015-02-07T07:53:00.000ZEnds: 2015-02-07T08:38:00.000Z</description>
        <styleUrl>#examplePolyStyle</styleUrl>
        <gx:balloonVisibility>1</gx:balloonVisibility>
        <Polygon>
            <outerBoundaryIs>
                <LinearRing>
<coordinates>
    149.02126,-36.489864,100 
    149.3816,0,0 
    -36.31477,100,0 
    149.25783,-36.134285,100 
    148.9647,-36.4074,100 
    149.02126,-36.489864,100 
</coordinates>
                </LinearRing>
            </outerBoundaryIs>
        </Polygon>
    </Placemark>
</Document>
</kml>

Answer 1

原始KML坐标在元组中有空格，这是无效的（空格分隔元组）。

从留档：

<代码>

<coordinates>149.02126, -36.489864, 100 149.3816, -36.31477, 100 149.25783, -36.134285, 100 148.9647, -36.4074, 100 149.02126, -36.489864, 100</coordinates>

应该是：

<coordinates>149.02126,-36.489864,100 149.3816,-36.31477,100 149.25783,-36.134285,100 148.9647,-36.4074,100 149.02126,-36.489864,100</coordinates>