ee.Number.getInfo

從伺服器擷取這個物件的值。

如果未提供回呼函式，系統會同步提出要求。如果提供回呼，要求會以非同步方式提出。

非同步模式是首選，因為同步模式會在等待伺服器時停止所有其他程式碼 (例如 EE Code Editor UI)。如要提出非同步要求，請使用 evaluate() 而非 getInfo()。

傳回這個物件的計算值。

用量傳回
Number.getInfo(callback)物件
引數類型詳細資料
this：computedobjectComputedObjectComputedObject 例項。
callback函式 (選用)選用的回呼。如未提供，系統會以同步方式進行呼叫。

範例

程式碼編輯器 (JavaScript)

/**
 * WARNING: this function transfers data from Earth Engine servers to the
 * client. Doing so can negatively affect request processing and client
 * performance. Server-side options should be used whenever possible.
 * Learn more about the distinction between server and client:
 * https://developers.google.com/earth-engine/guides/client_server
 */

// A server-side ee.Number object.
var numberServer = ee.Number(10.3);

// Use evaluate to transfer server-side number to the client.
var numberClient = numberServer.getInfo();
print('Client-side primitive data type', typeof numberClient);  // number
print('Client-side number', numberClient);  // 10.3
print('Client-side number used in expression', numberClient + 10);  // 20.3

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)

"""WARNING: this function transfers data from Earth Engine servers to the
client. Doing so can negatively affect request processing and client
performance. Server-side options should be used whenever possible.
Learn more about the distinction between server and client:
https://developers.google.com/earth-engine/guides/client_server
"""

# A server-side ee.Number object.
number_server = ee.Number(10.3)

number_client = number_server.getInfo()
print('Client-side primitive data type:', type(number_client))  # float
print('Client-side number:', number_client)  # 10.3
print('Client-side number used in expression:', number_client + 10)  # 20.3