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这是我写好的demo, 有解析工具和数据解析的思路. 提供一个参考!
https://github.com/summerxx27/KML
kml文件其中的一种格式, 如下展示的
<Placemark>
<name>001</name>
<LineString>
<extrude>1</extrude>
<tessellate>1</tessellate>
<altitudeMode>relativeToGround</altitudeMode>
<coordinates>121.4293828,31.14503434,0.000
121.4293843,31.14505119,0.000
121.4294429,31.1450459,0.000
121.4294405,31.14502915,0.000
</coordinates>
</LineString>
</Placemark>
<Placemark>
<name>002</name>
<LineString>
<extrude>1</extrude>
<tessellate>1</tessellate>
<altitudeMode>relativeToGround</altitudeMode>
<coordinates>121.4294405,31.14502915,0.000
121.4294429,31.1450459,0.000
121.4295036,31.14503995,0.000
121.4295004,31.14502314,0.000
</coordinates>
</LineString>
</Placemark>
之后绘制图形如图
