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ee.Feature.symmetricDifference
使用集合让一切井井有条
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返回一个包含两个特征的几何图形之间对称差的特征。
| 用法 | 返回 |
|---|
Feature.symmetricDifference(right, maxError, proj) | 功能 |
| 参数 | 类型 | 详细信息 |
|---|
此：left | 元素 | 包含用作运算左操作数的几何图形的要素。结果的属性将从此对象复制。 |
right | 元素 | 包含用作运算右操作数的几何图形的要素。系统会忽略此对象的属性。 |
maxError | ErrorMargin，默认值：null | 执行任何必要的重新投影时可容忍的最大误差量。 |
proj | 投影，默认值：null | 执行操作的投影。如果未指定，则操作将在球面坐标系中执行，并且球面上的直线距离将以米为单位。 |
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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 new Feature representing the geometric areas where either of the input Features exist, but not both.\u003c/p\u003e\n"],["\u003cp\u003eInput requires two Features: \u003ccode\u003eleft\u003c/code\u003e (properties are retained in output) and \u003ccode\u003eright\u003c/code\u003e (properties are discarded).\u003c/p\u003e\n"],["\u003cp\u003eOptional parameters include \u003ccode\u003emaxError\u003c/code\u003e for reprojection tolerance and \u003ccode\u003eproj\u003c/code\u003e to define the operation's projection (defaults to spherical with meter units).\u003c/p\u003e\n"]]],["The `symmetricDifference` function calculates the symmetric difference between the geometries of two features (`left` and `right`). The function returns a new `Feature` with the resultant geometry. Properties are copied from the `left` feature, while the `right` feature's properties are ignored. The operation can be performed with a specified `maxError` tolerance and `proj` projection; defaulting to a spherical system with meter distances if a projection is not specified.\n"],null,["# ee.Feature.symmetricDifference\n\nReturns a feature containing the symmetric difference between geometries of two features.\n\n\u003cbr /\u003e\n\n| Usage | Returns |\n|---------------------------------------------------------------|---------|\n| Feature.symmetricDifference`(right, `*maxError* `, `*proj*`)` | Feature |\n\n| Argument | Type | Details |\n|--------------|----------------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|\n| this: `left` | Element | The feature containing the geometry used as the left operand of the operation. The properties of the result will be copied from this object. |\n| `right` | Element | The feature containing the geometry used as the right operand of the operation. The properties of this object are ignored. |\n| `maxError` | ErrorMargin, default: null | The maximum amount of error tolerated when performing any necessary reprojection. |\n| `proj` | Projection, default: null | The projection in which to perform the operation. If not specified, the operation will be performed in a spherical coordinate system, and linear distances will be in meters on the sphere. |"]]
