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ee.DateRange.union
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 DateRange，其中包含此 DateRange 与另一个 DateRange 的并集中的所有点。
| 用法 | 返回 |
|---|
DateRange.union(other) | DateRange |
| 参数 | 类型 | 详细信息 |
|---|
此：dateRange | DateRange | |
other | DateRange | |
示例
代码编辑器 (JavaScript)
// A series of ee.DateRange objects.
var dateRange1 = ee.DateRange('2017-06-24', '2017-07-24');
var dateRange2 = ee.DateRange('2017-06-30', '2018-07-10');
var dateRange3 = ee.DateRange('1970-06-24', '1971-07-24');
// Determine the union of ee.DateRange objects.
print('Union of dateRange1 and dateRange2, which overlap',
dateRange1.union(dateRange2));
print('Union of dateRange1 and dateRange3, which do not overlap',
dateRange1.union(dateRange3));
Python 设置
如需了解 Python API 和如何使用 geemap 进行交互式开发，请参阅
Python 环境页面。
import ee
import geemap.core as geemap
Colab (Python)
# A series of ee.DateRange objects.
date_range_1 = ee.DateRange('2017-06-24', '2017-07-24')
date_range_2 = ee.DateRange('2017-06-30', '2018-07-10')
date_range_3 = ee.DateRange('1970-06-24', '1971-07-24')
# Determine the union of ee.DateRange objects.
display(
'Union of date_range_1 and date_range_2, which overlap:',
date_range_1.union(date_range_2)
)
display(
'Union of date_range_1 and date_range_3, which do not overlap:',
date_range_1.union(date_range_3)
)
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\u003e\u003ccode\u003eDateRange.union()\u003c/code\u003e combines two \u003ccode\u003eDateRange\u003c/code\u003e objects, returning a new \u003ccode\u003eDateRange\u003c/code\u003e that encompasses all dates within either of the original ranges.\u003c/p\u003e\n"],["\u003cp\u003eThe resulting \u003ccode\u003eDateRange\u003c/code\u003e represents the union of the input date ranges, effectively expanding the overall time period covered.\u003c/p\u003e\n"],["\u003cp\u003eThis function is useful for consolidating or comparing time periods represented by separate \u003ccode\u003eDateRange\u003c/code\u003e objects.\u003c/p\u003e\n"]]],["The `DateRange.union(other)` method combines two `DateRange` objects, returning a new `DateRange` that encompasses all dates within both original ranges. It accepts another `DateRange` as an argument. The examples demonstrate this function in both JavaScript and Python, by uniting overlapping and non-overlapping date ranges, illustrating the creation of a single `DateRange` that covers the entire temporal extent of the combined inputs.\n"],null,["# ee.DateRange.union\n\nReturns a DateRange that contains all points in the union of this DateRange and another.\n\n\u003cbr /\u003e\n\n| Usage | Returns |\n|--------------------------|-----------|\n| DateRange.union`(other)` | DateRange |\n\n| Argument | Type | Details |\n|-------------------|-----------|---------|\n| this: `dateRange` | DateRange | |\n| `other` | DateRange | |\n\nExamples\n--------\n\n### Code Editor (JavaScript)\n\n```javascript\n// A series of ee.DateRange objects.\nvar dateRange1 = ee.DateRange('2017-06-24', '2017-07-24');\nvar dateRange2 = ee.DateRange('2017-06-30', '2018-07-10');\nvar dateRange3 = ee.DateRange('1970-06-24', '1971-07-24');\n\n// Determine the union of ee.DateRange objects.\nprint('Union of dateRange1 and dateRange2, which overlap',\n dateRange1.union(dateRange2));\nprint('Union of dateRange1 and dateRange3, which do not overlap',\n dateRange1.union(dateRange3));\n```\nPython setup\n\nSee the [Python Environment](/earth-engine/guides/python_install) page for information on the Python API and using\n`geemap` for interactive development. \n\n```python\nimport ee\nimport geemap.core as geemap\n```\n\n### Colab (Python)\n\n```python\n# A series of ee.DateRange objects.\ndate_range_1 = ee.DateRange('2017-06-24', '2017-07-24')\ndate_range_2 = ee.DateRange('2017-06-30', '2018-07-10')\ndate_range_3 = ee.DateRange('1970-06-24', '1971-07-24')\n\n# Determine the union of ee.DateRange objects.\ndisplay(\n 'Union of date_range_1 and date_range_2, which overlap:',\n date_range_1.union(date_range_2)\n)\ndisplay(\n 'Union of date_range_1 and date_range_3, which do not overlap:',\n date_range_1.union(date_range_3)\n)\n```"]]
