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ee.Number.rightShift
透過集合功能整理內容
你可以依據偏好儲存及分類內容。
計算 v1 向右位移 v2 位元的帶正負號值。
| 用量 | 傳回 |
|---|
Number.rightShift(right) | 數字 |
| 引數 | 類型 | 詳細資料 |
|---|
這個：left | 數字 | 左側值。 |
right | 數字 | 右側值。 |
範例
程式碼編輯器 (JavaScript)
/**
* Unsigned 8-bit type example.
*
* 20 as binary: 00010100
* Right shift 2: 00000101
*
* 00000101 is binary for 5.
*/
print(ee.Number(20).rightShift(2)); // 5
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)
"""Unsigned 8-bit type example.
20 as binary: 00010100
Right shift 2: 00000101
00000101 is binary for 5.
"""
print(ee.Number(20).rightShift(2).getInfo()) # 5
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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\u003ePerforms a signed right bitwise shift operation on a number, moving bits to the right by a specified amount.\u003c/p\u003e\n"],["\u003cp\u003eReturns the result of shifting the bits of the left-hand value to the right by the number of bits specified by the right-hand value.\u003c/p\u003e\n"],["\u003cp\u003eUsage involves calling \u003ccode\u003erightShift()\u003c/code\u003e on an \u003ccode\u003eee.Number\u003c/code\u003e object, passing the shift amount as an argument.\u003c/p\u003e\n"],["\u003cp\u003eExamples demonstrate the concept using both JavaScript and Python in Google Earth Engine.\u003c/p\u003e\n"]]],["The content details how to perform a signed right shift operation on a number. It takes two numerical arguments: `left` (the number to be shifted) and `right` (the number of bits to shift). The operation `Number.rightShift(right)` returns a new number. The provided examples demonstrate shifting the binary representation of 20 two positions to the right, resulting in the value 5. Both JavaScript and Python code examples illustrate this behavior.\n"],null,["# ee.Number.rightShift\n\nCalculates the signed right shift of v1 by v2 bits.\n\n\u003cbr /\u003e\n\n| Usage | Returns |\n|----------------------------|---------|\n| Number.rightShift`(right)` | Number |\n\n| Argument | Type | Details |\n|--------------|--------|-----------------------|\n| this: `left` | Number | The left-hand value. |\n| `right` | Number | The right-hand value. |\n\nExamples\n--------\n\n### Code Editor (JavaScript)\n\n```javascript\n/**\n * Unsigned 8-bit type example.\n *\n * 20 as binary: 00010100\n * Right shift 2: 00000101\n *\n * 00000101 is binary for 5.\n */\n\nprint(ee.Number(20).rightShift(2)); // 5\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\"\"\"Unsigned 8-bit type example.\n\n20 as binary: 00010100\nRight shift 2: 00000101\n\n00000101 is binary for 5.\n\"\"\"\n\nprint(ee.Number(20).rightShift(2).getInfo()) # 5\n```"]]
