ee.FeatureCollection.getInfo

一种命令式函数，可通过 AJAX 调用返回有关此集合的所有已知信息。

返回字段包括以下内容的集合说明：

  - features：一个列表，包含有关集合中特征的元数据。

  - properties：一个可选的字典，包含集合的元数据属性。

用法返回
FeatureCollection.getInfo(callback)FeatureCollectionDescription
参数类型详细信息
此：featurecollectionFeatureCollectionFeatureCollection 实例。
callback函数（可选）可选的回调。如果未提供，则以同步方式进行调用。如果提供，则在成功时使用第一个参数调用，在不成功时使用第二个参数调用。

示例

代码编辑器 (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.FeatureCollection of power plants in Belgium.
var fcServer = ee.FeatureCollection('WRI/GPPD/power_plants')
             .filter('country_lg == "Belgium"');

// Use getInfo to transfer server-side feature collection to the client. The
// result is an object.
var fcClient = fcServer.getInfo();
print('Client-side feature collection is an object', typeof fcClient);
print('Feature collection object keys', Object.keys(fcClient));
print('Array of features', fcClient.features);
print('Properties of first feature', fcClient.features[0].properties);

Python 设置

如需了解 Python API 和如何使用 geemap 进行交互式开发，请参阅 Python 环境页面。

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.FeatureCollection of power plants in Belgium.
fc_server = ee.FeatureCollection('WRI/GPPD/power_plants').filter(
    'country_lg == "Belgium"')

# Use getInfo to transfer server-side feature collection to the client. The
# result is an object.
fc_client = fc_server.getInfo()
print('Client-side feature collection is a dictionary:', type(fc_client))
print('Feature collection dictionary keys:', fc_client.keys())
print('Array of features:', fc_client['features'])
print('Properties of first feature:', fc_client['features'][0]['properties'])