إشعار: يجب
إثبات أهلية جميع المشاريع غير التجارية المسجّلة لاستخدام Earth Engine قبل
15 أبريل 2025 من أجل الحفاظ على إمكانية الوصول إلى Earth Engine.
ee.FeatureCollection.getInfo
تنظيم صفحاتك في مجموعات
يمكنك حفظ المحتوى وتصنيفه حسب إعداداتك المفضّلة.
دالة إلزامية تعرض كل المعلومات المعروفة عن هذه المجموعة من خلال طلب AJAX.
تعرِض هذه الطريقة وصفًا للمجموعة تتضمّن حقوله ما يلي:
- features: قائمة تحتوي على بيانات وصفية حول الميزات في المجموعة.
- properties: قاموس اختياري يحتوي على خصائص البيانات الوصفية للمجموعة.
| الاستخدام | المرتجعات |
|---|
FeatureCollection.getInfo(callback) | FeatureCollectionDescription |
| الوسيطة | النوع | التفاصيل |
|---|
هذا: featurecollection | FeatureCollection | مثيل FeatureCollection |
callback | الدالة، اختيارية | دالة ردّ اختيارية في حال عدم توفيرها، يتم إجراء المكالمة بشكل متزامن. إذا تم توفيرها، سيتم استدعاؤها مع المَعلمة الأولى في حال النجاح والمَعلمة الثانية في حال عدم النجاح. |
أمثلة
محرّر الرموز البرمجية (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);
إعداد Python
راجِع صفحة
بيئة Python للحصول على معلومات حول واجهة برمجة التطبيقات Python واستخدام
geemap للتطوير التفاعلي.
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'])
إنّ محتوى هذه الصفحة مرخّص بموجب ترخيص Creative Commons Attribution 4.0 ما لم يُنصّ على خلاف ذلك، ونماذج الرموز مرخّصة بموجب ترخيص Apache 2.0. للاطّلاع على التفاصيل، يُرجى مراجعة سياسات موقع Google Developers. إنّ Java هي علامة تجارية مسجَّلة لشركة Oracle و/أو شركائها التابعين.
تاريخ التعديل الأخير: 2025-07-26 (حسب التوقيت العالمي المتفَّق عليه)
[null,null,["تاريخ التعديل الأخير: 2025-07-26 (حسب التوقيت العالمي المتفَّق عليه)"],[[["\u003cp\u003e\u003ccode\u003egetInfo()\u003c/code\u003e retrieves all data from a server-side FeatureCollection to the client as a FeatureCollectionDescription.\u003c/p\u003e\n"],["\u003cp\u003eThe returned FeatureCollectionDescription contains 'features' (metadata about features) and optional 'properties' (collection metadata).\u003c/p\u003e\n"],["\u003cp\u003eThis function can negatively impact performance due to client-side data transfer; server-side alternatives are preferred when feasible.\u003c/p\u003e\n"],["\u003cp\u003eUsage involves calling \u003ccode\u003eFeatureCollection.getInfo()\u003c/code\u003e with an optional callback function for asynchronous execution.\u003c/p\u003e\n"]]],[],null,["# ee.FeatureCollection.getInfo\n\n\u003cbr /\u003e\n\nAn imperative function that returns all the known information about this collection via an AJAX call.\n\n\u003cbr /\u003e\n\nReturns a collection description whose fields include:\n\n- features: a list containing metadata about the features in the collection.\n\n- properties: an optional dictionary containing the collection's metadata properties.\n\n| Usage | Returns |\n|-------------------------------------------|------------------------------|\n| FeatureCollection.getInfo`(`*callback*`)` | FeatureCollectionDescription |\n\n| Argument | Type | Details |\n|---------------------------|--------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------|\n| this: `featurecollection` | FeatureCollection | The FeatureCollection instance. |\n| `callback` | Function, optional | An optional callback. If not supplied, the call is made synchronously. If supplied, will be called with the first parameter if successful and the second if unsuccessful. |\n\nExamples\n--------\n\n### Code Editor (JavaScript)\n\n```javascript\n/**\n * WARNING: this function transfers data from Earth Engine servers to the\n * client. Doing so can negatively affect request processing and client\n * performance. Server-side options should be used whenever possible.\n * Learn more about the distinction between server and client:\n * https://developers.google.com/earth-engine/guides/client_server\n */\n\n// A server-side ee.FeatureCollection of power plants in Belgium.\nvar fcServer = ee.FeatureCollection('WRI/GPPD/power_plants')\n .filter('country_lg == \"Belgium\"');\n\n// Use getInfo to transfer server-side feature collection to the client. The\n// result is an object.\nvar fcClient = fcServer.getInfo();\nprint('Client-side feature collection is an object', typeof fcClient);\nprint('Feature collection object keys', Object.keys(fcClient));\nprint('Array of features', fcClient.features);\nprint('Properties of first feature', fcClient.features[0].properties);\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\"\"\"WARNING: this function transfers data from Earth Engine servers to the\nclient. Doing so can negatively affect request processing and client\nperformance. Server-side options should be used whenever possible.\nLearn more about the distinction between server and client:\nhttps://developers.google.com/earth-engine/guides/client_server\n\"\"\"\n\n# A server-side ee.FeatureCollection of power plants in Belgium.\nfc_server = ee.FeatureCollection('WRI/GPPD/power_plants').filter(\n 'country_lg == \"Belgium\"')\n\n# Use getInfo to transfer server-side feature collection to the client. The\n# result is an object.\nfc_client = fc_server.getInfo()\nprint('Client-side feature collection is a dictionary:', type(fc_client))\nprint('Feature collection dictionary keys:', fc_client.keys())\nprint('Array of features:', fc_client['features'])\nprint('Properties of first feature:', fc_client['features'][0]['properties'])\n```"]]
