Si aucune fonction de rappel n'est fournie, la requête est effectuée de manière synchrone. Si un rappel est fourni, la requête est effectuée de manière asynchrone.
Le mode asynchrone est préférable, car le mode synchrone arrête tout autre code (par exemple, l'UI de l'éditeur de code EE) en attendant le serveur. Pour effectuer une requête asynchrone, il est préférable d'utiliser evaluate() plutôt que getInfo().
Renvoie la valeur calculée de cet objet.
Utilisation | Renvoie |
---|---|
Date.getInfo(callback) | Objet |
Argument | Type | Détails |
---|---|---|
ceci : computedobject | ComputedObject | Instance ComputedObject. |
callback | Fonction, facultatif | Un rappel facultatif. Si ce paramètre n'est pas spécifié, l'appel est effectué de manière synchrone. |
Exemples
Éditeur de code (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.Date object. var dateServer = ee.Date('2021-4-30'); // Use getInfo to transfer server-side date to the client. The result is // an object with keys "type" and "value" where "value" is milliseconds since // Unix epoch. var dateClient = dateServer.getInfo(); print('Client-side date is an object', typeof dateClient); print('Object keys include "type" and "value"', Object.keys(dateClient)); print('"value" is milliseconds since Unix epoch', dateClient.value); print('Client-side date in JS Date constructor', new Date(dateClient.value));
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 """ from datetime import datetime # A server-side ee.Date object. date_server = ee.Date('2021-4-30') # Use getInfo to transfer server-side date to the client. The result is # a dictionary with keys "type" and "value" where "value" is milliseconds since # Unix epoch. date_client = date_server.getInfo() print('Client-side date is a dictionary:', type(date_client)) print('Dictionary keys include "type" and "value":', date_client.keys()) print('"value" is milliseconds since Unix epoch:', date_client['value']) print('Client-side date in Python:', datetime.fromtimestamp(date_client['value'] / 1000))