Se nenhuma função de callback for fornecida, a solicitação será feita de forma síncrona. Se um callback for fornecido, a solicitação será feita de forma assíncrona.
O modo assíncrono é preferível porque o síncrono interrompe todo o outro código (por exemplo, a interface do editor de código do EE) enquanto aguarda o servidor. Para fazer uma solicitação assíncrona, é melhor usar evaluate() em vez de getInfo().
Retorna o valor calculado deste objeto.
| Uso | Retorna |
|---|---|
Date.getInfo(callback) | Objeto |
| Argumento | Tipo | Detalhes |
|---|---|---|
isso: computedobject | ComputedObject | A instância ComputedObject. |
callback | Função, opcional | Um callback opcional. Se não for fornecido, a chamada será feita de forma síncrona. |
Exemplos
Editor de código (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))