ee.FeatureCollection.distinct
קל לארגן דפים בעזרת אוספים
אפשר לשמור ולסווג תוכן על סמך ההעדפות שלך.
מסיר כפילויות מאוסף. שימו לב: הכפילויות נקבעות באמצעות גיבוב חזק של הטופס הסדרתי של המאפיינים שנבחרו.
| שימוש | החזרות |
|---|
FeatureCollection.distinct(properties) | FeatureCollection |
| ארגומנט | סוג | פרטים |
|---|
זה: collection | FeatureCollection | אוסף הקלט שממנו ייבחרו אובייקטים. |
properties | אובייקט | שם של מאפיין או רשימה של שמות מאפיינים שישמשו להשוואה. אפשר לכלול את המאפיין '.geo' כדי להשוות בין גיאומטריות של אובייקטים. |
דוגמאות
עורך הקוד (JavaScript)
// FeatureCollection of power plants in Belgium.
var fc = ee.FeatureCollection('WRI/GPPD/power_plants')
.filter('country_lg == "Belgium"');
print('FeatureCollection of power plants in Belgium', fc);
// Remove duplicate features according to property values.
print('Distinct based on a single property', fc.distinct('fuel1'));
print('Distinct based on two properties', fc.distinct(['fuel1', 'source']));
print('Distinct based on geometry', fc.distinct('.geo'));
הגדרת Python
מידע על Python API ועל שימוש ב-geemap לפיתוח אינטראקטיבי מופיע בדף
Python Environment.
import ee
import geemap.core as geemap
Colab (Python)
# FeatureCollection of power plants in Belgium.
fc = ee.FeatureCollection('WRI/GPPD/power_plants').filter(
'country_lg == "Belgium"')
print('FeatureCollection of power plants in Belgium:', fc.getInfo())
# Remove duplicate features according to property values.
print('Distinct based on a single property:', fc.distinct('fuel1').getInfo())
print('Distinct based on two properties:',
fc.distinct(['fuel1', 'source']).getInfo())
print('Distinct based on geometry', fc.distinct('.geo').getInfo())
אלא אם צוין אחרת, התוכן של דף זה הוא ברישיון Creative Commons Attribution 4.0 ודוגמאות הקוד הן ברישיון Apache 2.0. לפרטים, ניתן לעיין במדיניות האתר Google Developers. Java הוא סימן מסחרי רשום של חברת Oracle ו/או של השותפים העצמאיים שלה.
עדכון אחרון: 2025-07-26 (שעון UTC).
[null,null,["עדכון אחרון: 2025-07-26 (שעון UTC)."],[[["\u003cp\u003eThe \u003ccode\u003edistinct()\u003c/code\u003e method removes duplicate features from a FeatureCollection based on specified properties or geometry.\u003c/p\u003e\n"],["\u003cp\u003eDuplicates are identified using a strong hash of the serialized form of the selected properties or '.geo' for geometry.\u003c/p\u003e\n"],["\u003cp\u003eThe method accepts a property name, a list of property names, or '.geo' as input for comparison.\u003c/p\u003e\n"],["\u003cp\u003eIt returns a new FeatureCollection containing only the unique features.\u003c/p\u003e\n"],["\u003cp\u003eThe original FeatureCollection remains unchanged.\u003c/p\u003e\n"]]],["The `distinct` method removes duplicate features from a `FeatureCollection`. Duplicates are identified by comparing the serialized form of specified properties using a strong hash. The `properties` argument defines the comparison criteria, accepting a single property name or a list, including '.geo' for geometry. The method returns a new `FeatureCollection` with the duplicates removed. Examples are provided for both JavaScript and Python, using power plants in Belgium and properties like 'fuel1', 'source' or geometry to remove duplicates.\n"],null,["# ee.FeatureCollection.distinct\n\nRemoves duplicates from a collection. Note that duplicates are determined using a strong hash over the serialized form of the selected properties.\n\n\u003cbr /\u003e\n\n| Usage | Returns |\n|------------------------------------------|-------------------|\n| FeatureCollection.distinct`(properties)` | FeatureCollection |\n\n| Argument | Type | Details |\n|--------------------|-------------------|--------------------------------------------------------------------------------------------------------------------------------------|\n| this: `collection` | FeatureCollection | The input collection from which objects will be selected. |\n| `properties` | Object | A property name or a list of property names to use for comparison. The '.geo' property can be included to compare object geometries. |\n\nExamples\n--------\n\n### Code Editor (JavaScript)\n\n```javascript\n// FeatureCollection of power plants in Belgium.\nvar fc = ee.FeatureCollection('WRI/GPPD/power_plants')\n .filter('country_lg == \"Belgium\"');\nprint('FeatureCollection of power plants in Belgium', fc);\n\n// Remove duplicate features according to property values.\nprint('Distinct based on a single property', fc.distinct('fuel1'));\nprint('Distinct based on two properties', fc.distinct(['fuel1', 'source']));\nprint('Distinct based on geometry', fc.distinct('.geo'));\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# FeatureCollection of power plants in Belgium.\nfc = ee.FeatureCollection('WRI/GPPD/power_plants').filter(\n 'country_lg == \"Belgium\"')\nprint('FeatureCollection of power plants in Belgium:', fc.getInfo())\n\n# Remove duplicate features according to property values.\nprint('Distinct based on a single property:', fc.distinct('fuel1').getInfo())\nprint('Distinct based on two properties:',\n fc.distinct(['fuel1', 'source']).getInfo())\nprint('Distinct based on geometry', fc.distinct('.geo').getInfo())\n```"]]
