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ee.FeatureCollection.filter
Mantieni tutto organizzato con le raccolte
Salva e classifica i contenuti in base alle tue preferenze.
Applica un filtro a questa raccolta.
Restituisce la raccolta filtrata.
| Utilizzo | Resi |
|---|
FeatureCollection.filter(filter) | Raccolta |
| Argomento | Tipo | Dettagli |
|---|
questo: collection | Raccolta | L'istanza della raccolta. |
filter | Filtro | Un filtro da applicare a questa raccolta. |
Esempi
Editor di codice (JavaScript)
// Get Denver county polygon.
var denver = ee.FeatureCollection('FAO/GAUL_SIMPLIFIED_500m/2015/level2')
.filter("ADM2_NAME == 'Denver'")
.filter(ee.Filter.eq('ADM2_NAME', 'Denver')) // Exactly the same as above.
.first()
.geometry();
Map.centerObject(denver, 9);
Map.addLayer(denver, null, 'Denver');
Configurazione di Python
Consulta la pagina
Ambiente Python per informazioni sull'API Python e sull'utilizzo di
geemap per lo sviluppo interattivo.
import ee
import geemap.core as geemap
Colab (Python)
# Get Denver county polygon.
denver = (
ee.FeatureCollection('FAO/GAUL_SIMPLIFIED_500m/2015/level2')
.filter("ADM2_NAME == 'Denver'")
.filter(ee.Filter.eq('ADM2_NAME', 'Denver')) # Exactly the same as above.
.first()
.geometry()
)
m = geemap.Map()
m.center_object(denver, 9)
m.add_layer(denver, None, 'Denver')
m
Salvo quando diversamente specificato, i contenuti di questa pagina sono concessi in base alla licenza Creative Commons Attribution 4.0, mentre gli esempi di codice sono concessi in base alla licenza Apache 2.0. Per ulteriori dettagli, consulta le norme del sito di Google Developers. Java è un marchio registrato di Oracle e/o delle sue consociate.
Ultimo aggiornamento 2025-07-26 UTC.
[null,null,["Ultimo aggiornamento 2025-07-26 UTC."],[[["\u003cp\u003e\u003ccode\u003efilter()\u003c/code\u003e returns a filtered version of the original Earth Engine FeatureCollection based on the provided filter criteria.\u003c/p\u003e\n"],["\u003cp\u003eThe filter can be specified using a string expression (e.g., "ADM2_NAME == 'Denver'") or an \u003ccode\u003eee.Filter\u003c/code\u003e object (e.g., \u003ccode\u003eee.Filter.eq('ADM2_NAME', 'Denver')\u003c/code\u003e).\u003c/p\u003e\n"],["\u003cp\u003eThis method allows for the selection of specific features within a collection based on their properties.\u003c/p\u003e\n"],["\u003cp\u003eThe examples demonstrate how to filter a FeatureCollection to obtain a specific feature's geometry (Denver county) and display it on a map.\u003c/p\u003e\n"]]],["The content details how to apply a filter to a `FeatureCollection`, which returns a filtered collection. The `filter` argument, of type `Filter`, is applied to the `Collection` instance. Examples in JavaScript and Python demonstrate filtering a collection to find the 'Denver' county polygon using `.filter()`. This filtering can be done directly using the parameter name and value or using `ee.Filter.eq()` and is applied to the \"ADM2_NAME\" parameter.\n"],null,["# ee.FeatureCollection.filter\n\n\u003cbr /\u003e\n\nApply a filter to this collection.\n\n\u003cbr /\u003e\n\nReturns the filtered collection.\n\n| Usage | Returns |\n|------------------------------------|------------|\n| FeatureCollection.filter`(filter)` | Collection |\n\n| Argument | Type | Details |\n|--------------------|------------|---------------------------------------|\n| this: `collection` | Collection | The Collection instance. |\n| `filter` | Filter | A filter to apply to this collection. |\n\nExamples\n--------\n\n### Code Editor (JavaScript)\n\n```javascript\n// Get Denver county polygon.\nvar denver = ee.FeatureCollection('FAO/GAUL_SIMPLIFIED_500m/2015/level2')\n .filter(\"ADM2_NAME == 'Denver'\")\n .filter(ee.Filter.eq('ADM2_NAME', 'Denver')) // Exactly the same as above.\n .first()\n .geometry();\n\nMap.centerObject(denver, 9);\nMap.addLayer(denver, null, 'Denver');\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# Get Denver county polygon.\ndenver = (\n ee.FeatureCollection('FAO/GAUL_SIMPLIFIED_500m/2015/level2')\n .filter(\"ADM2_NAME == 'Denver'\")\n .filter(ee.Filter.eq('ADM2_NAME', 'Denver')) # Exactly the same as above.\n .first()\n .geometry()\n)\n\nm = geemap.Map()\nm.center_object(denver, 9)\nm.add_layer(denver, None, 'Denver')\nm\n```"]]
