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ee.ImageCollection.combine
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。
创建一个新集合，该集合是主集合中图片的副本，并添加了次集合中具有匹配 ID 的图片的所有波段。如果没有匹配的 ID，则生成的集合将为空。这相当于对 ID 进行内部联接，并合并结果的频段。
请注意，此算法假定对于匹配的输入对，两者具有相同的覆盖区和元数据。
| 用法 | 返回 |
|---|
ImageCollection.combine(secondary, overwrite) | ImageCollection |
| 参数 | 类型 | 详细信息 |
|---|
此：primary | ImageCollection | 要加入的主集合。 |
secondary | ImageCollection | 要联接的辅助集合。 |
overwrite | 布尔值，默认值：false | 如果为 true，则同名频段将被覆盖。如果为 false，则会重命名名称相同的频段。 |
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\u003eCreates a new image collection by combining images from two input collections based on matching IDs.\u003c/p\u003e\n"],["\u003cp\u003eMerges bands from matching images, resulting in an empty collection if no IDs match.\u003c/p\u003e\n"],["\u003cp\u003eImages with the same ID in both input collections are assumed to have identical footprint and metadata.\u003c/p\u003e\n"],["\u003cp\u003eBand names are preserved by default, but can be overwritten using the \u003ccode\u003eoverwrite\u003c/code\u003e parameter.\u003c/p\u003e\n"]]],["The function combines two `ImageCollections` (`primary` and `secondary`) by performing an inner join based on matching IDs. It copies images from the `primary` collection and adds bands from the `secondary` collection with the corresponding ID. If no matching ID is found, the resulting collection is empty. Band names that are the same can either be renamed or overwritten based on the `overwrite` flag. The function returns a new `ImageCollection`.\n"],null,["# ee.ImageCollection.combine\n\nMakes a new collection that is a copy of the images in primary, adding all the bands from the image in secondary with a matching ID. If there are no matching IDs, the resulting collection will be empty. This is equivalent to an inner join on ID with merging of the bands of the result.\n\n\u003cbr /\u003e\n\nNote that this algorithm assumes that for a matching pair of inputs, both have the same footprint and metadata.\n\n| Usage | Returns |\n|-----------------------------------------------------|-----------------|\n| ImageCollection.combine`(secondary, `*overwrite*`)` | ImageCollection |\n\n| Argument | Type | Details |\n|-----------------|-------------------------|-------------------------------------------------------------------------------------------------------------|\n| this: `primary` | ImageCollection | The primary collection to join. |\n| `secondary` | ImageCollection | The secondary collection to join. |\n| `overwrite` | Boolean, default: false | If true, bands with the same name will get overwritten. If false, bands with the same name will be renamed. |"]]
