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ee.Date.unitRatio
透過集合功能整理內容
你可以依據偏好儲存及分類內容。
傳回一個單位長度與另一個單位長度的比率，例如 unitRatio('day', 'minute') 會傳回 1440。有效的單位為「year」、「month」、「week」、「day」、「hour」、「minute」、「second」。
| 用量 | 傳回 |
|---|
ee.Date.unitRatio(numerator, denominator) | 浮點值 |
| 引數 | 類型 | 詳細資料 |
|---|
numerator | 字串 | |
denominator | 字串 | |
範例
程式碼編輯器 (JavaScript)
print('Minutes in a day', ee.Date.unitRatio('day', 'minute'));
print('Seconds in a year', ee.Date.unitRatio('year', 'second'));
print('Years in a month', ee.Date.unitRatio('month', 'year'));
print('Hours in a week', ee.Date.unitRatio('week', 'hour'));
Python 設定
請參閱「
Python 環境」頁面，瞭解 Python API 和如何使用 geemap 進行互動式開發。
import ee
import geemap.core as geemap
Colab (Python)
display('Minutes in a day:', ee.Date.unitRatio('day', 'minute'))
display('Seconds in a year:', ee.Date.unitRatio('year', 'second'))
display('Years in a month:', ee.Date.unitRatio('month', 'year'))
display('Hours in a week:', ee.Date.unitRatio('week', 'hour'))
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上次更新時間：2025-07-25 (世界標準時間)。
[null,null,["上次更新時間：2025-07-25 (世界標準時間)。"],[[["\u003cp\u003e\u003ccode\u003eee.Date.unitRatio()\u003c/code\u003e calculates the length ratio between two time units, such as days and minutes.\u003c/p\u003e\n"],["\u003cp\u003eValid time units for this function include 'year', 'month', 'week', 'day', 'hour', 'minute', and 'second'.\u003c/p\u003e\n"],["\u003cp\u003eThe function takes two string arguments: the numerator unit and the denominator unit, and returns a float representing the ratio.\u003c/p\u003e\n"],["\u003cp\u003eExample: \u003ccode\u003eee.Date.unitRatio('day', 'minute')\u003c/code\u003e would return 1440, indicating there are 1440 minutes in a day.\u003c/p\u003e\n"]]],["The `unitRatio` function calculates the ratio between two time units. It accepts two string arguments: `numerator` and `denominator`, representing the desired units. Valid time units include 'year', 'month', 'week', 'day', 'hour', 'minute', and 'second'. The function returns a float value representing the ratio of the numerator to the denominator (e.g., how many minutes are in a day). Examples are provided in JavaScript and Python demonstrating various unit conversions.\n"],null,["# ee.Date.unitRatio\n\nReturns the ratio of the length of one unit to the length of another, e.g., unitRatio('day', 'minute') returns 1440. Valid units are 'year', 'month', 'week', 'day', 'hour', 'minute', and 'second'.\n\n\u003cbr /\u003e\n\n| Usage | Returns |\n|---------------------------------------------|---------|\n| `ee.Date.unitRatio(numerator, denominator)` | Float |\n\n| Argument | Type | Details |\n|---------------|--------|---------|\n| `numerator` | String | |\n| `denominator` | String | |\n\nExamples\n--------\n\n### Code Editor (JavaScript)\n\n```javascript\nprint('Minutes in a day', ee.Date.unitRatio('day', 'minute'));\nprint('Seconds in a year', ee.Date.unitRatio('year', 'second'));\nprint('Years in a month', ee.Date.unitRatio('month', 'year'));\nprint('Hours in a week', ee.Date.unitRatio('week', 'hour'));\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\ndisplay('Minutes in a day:', ee.Date.unitRatio('day', 'minute'))\ndisplay('Seconds in a year:', ee.Date.unitRatio('year', 'second'))\ndisplay('Years in a month:', ee.Date.unitRatio('month', 'year'))\ndisplay('Hours in a week:', ee.Date.unitRatio('week', 'hour'))\n```"]]
