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ee.Feature.withinDistance
透過集合功能整理內容
你可以依據偏好儲存及分類內容。
如果兩個地圖項目的幾何圖形位於指定距離內，則傳回 true。
| 用量 | 傳回 |
|---|
Feature.withinDistance(right, distance, maxError, proj) | 布林值 |
| 引數 | 類型 | 詳細資料 |
|---|
這個：left | 元素 | 包含幾何圖形的特徵，用做運算的左側運算元。 |
right | 元素 | 包含幾何的特徵，用做運算的右運算元。 |
distance | 浮點值 | 距離閾值。如果指定投影，距離會以該投影座標系統的單位表示，否則會以公尺為單位。 |
maxError | ErrorMargin，預設值：null | 執行任何必要重投影時可容許的最大誤差量。 |
proj | 投影，預設值：null | 執行作業的投影。如未指定，系統會以球面座標系統執行作業，而球面上的線性距離會以公尺為單位。 |
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上次更新時間：2025-07-26 (世界標準時間)。
[null,null,["上次更新時間：2025-07-26 (世界標準時間)。"],[[["\u003cp\u003e\u003ccode\u003ewithinDistance\u003c/code\u003e determines if two geographic features are within a specified distance of each other, returning true if they are and false otherwise.\u003c/p\u003e\n"],["\u003cp\u003eThe distance threshold can be defined in meters or in the units of a given projected coordinate system.\u003c/p\u003e\n"],["\u003cp\u003eThis function considers the geometries of the features and can handle reprojection with a specified error margin if necessary.\u003c/p\u003e\n"]]],["The core function determines if two feature geometries are within a specified distance. It takes two features (`left`, `right`) and a `distance` (in meters or specified projection units) as input, returning a Boolean. Optional arguments include `maxError` for reprojection tolerance and `proj` to define the projection. The operation checks if `left` is within the given `distance` of `right`, considering the provided projection or defaulting to a spherical coordinate system.\n"],null,["# ee.Feature.withinDistance\n\nReturns true if and only if the geometries of two features are within a specified distance.\n\n\u003cbr /\u003e\n\n| Usage | Returns |\n|--------------------------------------------------------------------|---------|\n| Feature.withinDistance`(right, distance, `*maxError* `, `*proj*`)` | Boolean |\n\n| Argument | Type | Details |\n|--------------|----------------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|\n| this: `left` | Element | The feature containing the geometry used as the left operand of the operation. |\n| `right` | Element | The feature containing the geometry used as the right operand of the operation. |\n| `distance` | Float | The distance threshold. If a projection is specified, the distance is in units of that projected coordinate system, otherwise it is in meters. |\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. |"]]
