OL3:从KML提取“扩展数据" [英] OL3: extracting 'extended data' from KML
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问题描述
我已经创建了带有某些自定义属性(例如"id"和"room_id")的KML文件.
i have created a KML file with some custom attributes such as 'id' and 'room_id'.
这些属性存在于KML文件的扩展数据"部分中,这里是文件:
these attributes exist in the 'extended data' part of the KML file, here is the file:
<?xml version="1.0" encoding="utf-8" ?>
<kml xmlns="http://www.opengis.net/kml/2.2">
<Document id="root_doc">
<Schema name="map" id="map">
<SimpleField name="id" type="int"></SimpleField>
<SimpleField name="room_id" type="string"></SimpleField>
</Schema>
<Folder><name>map</name>
<Placemark>
<name>room1</name>
<Style><LineStyle><color>ff0000ff</color></LineStyle><PolyStyle><fill>0</fill></PolyStyle></Style>
<ExtendedData><SchemaData schemaUrl="#map">
<SimpleData name="id">2</SimpleData>
<SimpleData name="room_id">1</SimpleData>
</SchemaData></ExtendedData>
<Polygon><altitudeMode>relativeToGround</altitudeMode><outerBoundaryIs><LinearRing><altitudeMode>relativeToGround</altitudeMode> <coordinates>-0.000010931306469,0.000006764422322 -0.000004193941839,0.000006764422322 -0.000004166884149,0.00000037880765 -0.000010985421848,0.00000043292302 -0.000010931306469,0.000006764422322</coordinates></LinearRing></outerBoundaryIs></Polygon>
</Placemark>
</Folder>
</Document></kml>
我正在尝试使用OL3访问这些属性,但无法弄清楚.这是我用来访问标准KML属性名称"和描述"的代码:
i am trying to access these attributes using OL3 but can't figure it out. here is the code i use to access the standard KML properties 'name' and 'description':
vector.getSource().forEachFeature(function (feature) {
var desc = feature.getProperties()['description'];
console.log(desc);
var name = feature.getProperties()['name'];
console.log(name);
});
如何使用OL3访问KML文件的扩展数据"属性?
how do i access the 'extended data' properties of a KML file with OL3?
谢谢!
推荐答案
很简单:
var properties = feature.getProperties();
console.log(properties['id']);
console.log(properties['room_id']);
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