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ui.Map.DrawingTools.toFeatureCollection
使用集合让一切井井有条
根据您的偏好保存内容并对其进行分类。
返回一个要素集合，其中绘图工具中的每个几何图形都是一个要素。
| 用法 | 返回 |
|---|
DrawingTools.toFeatureCollection(indexProperty) | FeatureCollection |
| 参数 | 类型 | 详细信息 |
|---|
此：ui.map.drawingtools | ui.Map.DrawingTools | ui.Map.DrawingTools 实例。 |
indexProperty | 字符串 | 系统会为返回集合中的每个功能分配具有此名称的属性。该属性的值将是一个数字，对应于几何图形所属的几何图形图层的索引。 |
如未另行说明，那么本页面中的内容已根据知识共享署名 4.0 许可获得了许可，并且代码示例已根据 Apache 2.0 许可获得了许可。有关详情，请参阅 Google 开发者网站政策。Java 是 Oracle 和/或其关联公司的注册商标。
最后更新时间 (UTC)：2025-07-26。
[null,null,["最后更新时间 (UTC)：2025-07-26。"],[[["\u003cp\u003eReturns a FeatureCollection where each drawn geometry is represented as a separate feature.\u003c/p\u003e\n"],["\u003cp\u003eThe \u003ccode\u003etoFeatureCollection()\u003c/code\u003e method takes an optional \u003ccode\u003eindexProperty\u003c/code\u003e argument, allowing you to assign a unique index to each feature based on its layer.\u003c/p\u003e\n"],["\u003cp\u003eAccess this functionality through the \u003ccode\u003eui.Map.DrawingTools\u003c/code\u003e instance, specifically using the DrawingTools object.\u003c/p\u003e\n"]]],["The `DrawingTools.toFeatureCollection` method converts drawn geometries into a FeatureCollection. It operates on a `ui.Map.DrawingTools` instance. The method accepts an `indexProperty` argument (a string). This property is added to each feature in the collection, and its value will reflect the index of the geometry layer where it was drawn. It returns a FeatureCollection object.\n"],null,["# ui.Map.DrawingTools.toFeatureCollection\n\n\u003cbr /\u003e\n\nReturns a feature collection in which each geometry in the drawing tools is a feature.\n\n\u003cbr /\u003e\n\n| Usage | Returns |\n|---------------------------------------------------|-------------------|\n| DrawingTools.toFeatureCollection`(indexProperty)` | FeatureCollection |\n\n| Argument | Type | Details |\n|-----------------------------|---------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|\n| this: `ui.map.drawingtools` | ui.Map.DrawingTools | The ui.Map.DrawingTools instance. |\n| `indexProperty` | String | A property with this name will be assigned to every feature in the returned collection. The value of the property will be a number that corresponds to the index of the geometry layer to which the geometry belongs. |"]]
