ee.FeatureCollection.select
Mit Sammlungen den Überblick behalten
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Wählen Sie Eigenschaften aus jedem Feature in einer Sammlung aus. Es ist auch möglich, diese Funktion nur mit Stringargumenten aufzurufen. Sie werden alle als „propertySelectors“ (Varargs) interpretiert.
Gibt die Sammlung von Features mit ausgewählten Attributen zurück.
Nutzung | Ausgabe |
---|
FeatureCollection.select(propertySelectors, newProperties, retainGeometry) | FeatureCollection |
Argument | Typ | Details |
---|
So gehts: featurecollection | FeatureCollection | Die FeatureCollection-Instanz. |
propertySelectors | List<String> | Eine Liste mit Namen oder regulären Ausdrücken, die die auszuwählenden Attribute angeben. |
newProperties | List<String>, optional | Eine Liste mit neuen Namen für die Ausgabeparameter. Muss mit der Anzahl der ausgewählten Properties übereinstimmen. |
retainGeometry | Boolesch, optional | Wenn „false“, hat das Ergebnis eine NULL-Geometrie. Der Standardwert ist „true“. |
Beispiele
Code-Editor (JavaScript)
// FeatureCollection of power plants in Belgium.
var fc = ee.FeatureCollection('WRI/GPPD/power_plants')
.filter('country_lg == "Belgium"');
// Select a single property.
var singleProp = fc.select('fuel1');
print('Single property selected',
singleProp.first());
// Select multiple properties.
var multiProp = fc.select(['fuel1', 'capacitymw']);
print('Multiple properties selected',
multiProp.first());
// Select multiple properties and rename them.
var multiPropRename = fc.select({
propertySelectors: ['fuel1', 'capacitymw'],
newProperties: ['Fuel_1', 'Capacity_MW']
});
print('Multiple properties selected, renamed',
multiPropRename.first());
// Select multiple properties, remove geometry.
var multiPropNoGeom = fc.select({
propertySelectors: ['fuel1', 'capacitymw'],
retainGeometry: false
});
print('Multiple properties selected, geometry removed',
multiPropNoGeom.first());
Python einrichten
Informationen zur Python API und zur Verwendung von geemap
für die interaktive Entwicklung finden Sie auf der Seite
Python-Umgebung.
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"')
# Select a single property.
single_prop = fc.select('fuel1')
print('Single property selected:', single_prop.first().getInfo())
# Select multiple properties.
multi_prop = fc.select(['fuel1', 'capacitymw'])
print('Multiple properties selected:', multi_prop.first().getInfo())
# Select multiple properties and rename them.
multi_prop_rename = fc.select(**{
'propertySelectors': ['fuel1', 'capacitymw'],
'newProperties': ['Fuel_1', 'Capacity_MW']
})
print('Multiple properties selected, renamed:',
multi_prop_rename.first().getInfo())
# Select multiple properties, remove geometry.
multi_prop_no_geom = fc.select(**{
'propertySelectors': ['fuel1', 'capacitymw'],
'retainGeometry': False
})
print('Multiple properties selected, geometry removed:',
multi_prop_no_geom.first().getInfo())
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Zuletzt aktualisiert: 2025-07-25 (UTC).
[null,null,["Zuletzt aktualisiert: 2025-07-25 (UTC)."],[[["\u003cp\u003e\u003ccode\u003eFeatureCollection.select()\u003c/code\u003e allows you to select specific properties (attributes) from each feature within a FeatureCollection.\u003c/p\u003e\n"],["\u003cp\u003eYou can select properties by their names, rename them, and optionally retain or remove the feature's geometry.\u003c/p\u003e\n"],["\u003cp\u003eIt accepts arguments like \u003ccode\u003epropertySelectors\u003c/code\u003e for specifying properties to select, \u003ccode\u003enewProperties\u003c/code\u003e for renaming them, and \u003ccode\u003eretainGeometry\u003c/code\u003e to control geometry inclusion.\u003c/p\u003e\n"],["\u003cp\u003eThe function returns a new FeatureCollection containing only the selected properties (and potentially modified geometry) for each feature.\u003c/p\u003e\n"]]],[],null,["# ee.FeatureCollection.select\n\n\u003cbr /\u003e\n\nSelect properties from each Feature in a collection. It is also possible to call this function with only string arguments; they will be all be interpreted as propertySelectors (varargs).\n\n\u003cbr /\u003e\n\nReturns the feature collection with selected properties.\n\n| Usage | Returns |\n|---------------------------------------------------------------------------------------|-------------------|\n| FeatureCollection.select`(propertySelectors, `*newProperties* `, `*retainGeometry*`)` | FeatureCollection |\n\n| Argument | Type | Details |\n|---------------------------|--------------------------|----------------------------------------------------------------------------------------------|\n| this: `featurecollection` | FeatureCollection | The FeatureCollection instance. |\n| `propertySelectors` | List\\\u003cString\\\u003e | A list of names or regexes specifying the attributes to select. |\n| `newProperties` | List\\\u003cString\\\u003e, optional | A list of new names for the output properties. Must match the number of properties selected. |\n| `retainGeometry` | Boolean, optional | When false, the result will have a NULL geometry. Defaults to true. |\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\"');\n\n// Select a single property.\nvar singleProp = fc.select('fuel1');\nprint('Single property selected',\n singleProp.first());\n\n// Select multiple properties.\nvar multiProp = fc.select(['fuel1', 'capacitymw']);\nprint('Multiple properties selected',\n multiProp.first());\n\n// Select multiple properties and rename them.\nvar multiPropRename = fc.select({\n propertySelectors: ['fuel1', 'capacitymw'],\n newProperties: ['Fuel_1', 'Capacity_MW']\n});\nprint('Multiple properties selected, renamed',\n multiPropRename.first());\n\n// Select multiple properties, remove geometry.\nvar multiPropNoGeom = fc.select({\n propertySelectors: ['fuel1', 'capacitymw'],\n retainGeometry: false\n});\nprint('Multiple properties selected, geometry removed',\n multiPropNoGeom.first());\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\"')\n\n# Select a single property.\nsingle_prop = fc.select('fuel1')\nprint('Single property selected:', single_prop.first().getInfo())\n\n# Select multiple properties.\nmulti_prop = fc.select(['fuel1', 'capacitymw'])\nprint('Multiple properties selected:', multi_prop.first().getInfo())\n\n# Select multiple properties and rename them.\nmulti_prop_rename = fc.select(**{\n 'propertySelectors': ['fuel1', 'capacitymw'],\n 'newProperties': ['Fuel_1', 'Capacity_MW']\n })\nprint('Multiple properties selected, renamed:',\n multi_prop_rename.first().getInfo())\n\n# Select multiple properties, remove geometry.\nmulti_prop_no_geom = fc.select(**{\n 'propertySelectors': ['fuel1', 'capacitymw'],\n 'retainGeometry': False\n })\nprint('Multiple properties selected, geometry removed:',\n multi_prop_no_geom.first().getInfo())\n```"]]