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ee.Filter.withinDistance
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| 用法 | 返回 |
|---|
ee.Filter.withinDistance(distance, leftField, rightValue, rightField, leftValue, maxError) | 过滤 |
| 参数 | 类型 | 详细信息 |
|---|
distance | 浮点数 | 过滤条件将返回 true 的最大距离。 |
leftField | 字符串，默认值：null | 左操作数的选择器。如果指定了 leftValue，则不应指定此参数。 |
rightValue | 对象，默认值：null | 右操作数的值。如果指定了 rightField，则不应指定此字段。 |
rightField | 字符串，默认值：null | 用于选择右操作数的选择器。如果指定了 rightValue，则不应指定此参数。 |
leftValue | 对象，默认值：null | 左操作数的值。如果指定了 leftField，则不应指定此字段。 |
maxError | ErrorMargin，可选 | 应用过滤条件期间允许的最大重投影误差。 |
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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\u003eDetermines if one geometry lies within a specified distance of another, useful for filtering and spatial joins.\u003c/p\u003e\n"],["\u003cp\u003eOperates on two geometries, allowing specification by field or direct value for both.\u003c/p\u003e\n"],["\u003cp\u003eDistance is a crucial parameter defining the maximum allowable separation for the filter to pass.\u003c/p\u003e\n"],["\u003cp\u003eOffers flexibility with optional error margin control during reprojection.\u003c/p\u003e\n"]]],["This functionality generates a filter based on the proximity of two geometries. It verifies if a left geometry falls within a designated `distance` of a right geometry. The `distance` parameter dictates the threshold for a true result. It accepts parameters such as `leftField`, `rightValue`, `rightField`, `leftValue`, and `maxError`. The filter's operation can be defined via fields or direct values for each geometry. When used in a join, it measures join proximity by the specified `distance`.\n"],null,["# ee.Filter.withinDistance\n\nCreates a unary or binary filter that passes if the left geometry is within a specified distance of the right geometry. If used as a join condition, this distance is used as a join measure.\n\n\u003cbr /\u003e\n\n| Usage | Returns |\n|----------------------------------------------------------------------------------------------------------------------|---------|\n| `ee.Filter.withinDistance(distance, `*leftField* `, `*rightValue* `, `*rightField* `, `*leftValue* `, `*maxError*`)` | Filter |\n\n| Argument | Type | Details |\n|--------------|-----------------------|---------------------------------------------------------------------------------------|\n| `distance` | Float | The maximum distance for which the filter will return true. |\n| `leftField` | String, default: null | A selector for the left operand. Should not be specified if leftValue is specified. |\n| `rightValue` | Object, default: null | The value of the right operand. Should not be specified if rightField is specified. |\n| `rightField` | String, default: null | A selector for the right operand. Should not be specified if rightValue is specified. |\n| `leftValue` | Object, default: null | The value of the left operand. Should not be specified if leftField is specified. |\n| `maxError` | ErrorMargin, optional | The maximum reprojection error allowed during filter application. |"]]
