ee.ImageCollection.size
Restez organisé à l'aide des collections
Enregistrez et classez les contenus selon vos préférences.
Renvoie le nombre d'éléments de la collection.
| Utilisation | Renvoie |
|---|
ImageCollection.size() | Nombre entier |
| Argument | Type | Détails |
|---|
ceci : collection | FeatureCollection | Collection à comptabiliser. |
Exemples
Éditeur de code (JavaScript)
// Note: ee.ImageCollection.size may take a lot of time and memory to run,
// since it must generate all of the results in order to count them. Large
// collections and/or complex computations can produce memory limitation
// errors.
// A Landsat 8 TOA image collection (1 year of images at a specific point).
var col = ee.ImageCollection('LANDSAT/LC08/C02/T1_TOA')
.filterBounds(ee.Geometry.Point(-90.70, 34.71))
.filterDate('2020-01-01', '2021-01-01');
// Get the number of images in the collection.
print('Number of images', col.size());
Configuration de Python
Consultez la page
Environnement Python pour en savoir plus sur l'API Python et sur l'utilisation de geemap pour le développement interactif.
import ee
import geemap.core as geemap
Colab (Python)
# Note: ee.ImageCollection.size may take a lot of time and memory to run,
# since it must generate all of the results in order to count them. Large
# collections and/or complex computations can produce memory limitation
# errors.
# A Landsat 8 TOA image collection (1 year of images at a specific point).
col = ee.ImageCollection('LANDSAT/LC08/C02/T1_TOA').filterBounds(
ee.Geometry.Point(-90.70, 34.71)
).filterDate('2020-01-01', '2021-01-01')
# Get the number of images in the collection.
print('Number of images', col.size().getInfo())
Sauf indication contraire, le contenu de cette page est régi par une licence Creative Commons Attribution 4.0, et les échantillons de code sont régis par une licence Apache 2.0. Pour en savoir plus, consultez les Règles du site Google Developers. Java est une marque déposée d'Oracle et/ou de ses sociétés affiliées.
Dernière mise à jour le 2025/07/26 (UTC).
[null,null,["Dernière mise à jour le 2025/07/26 (UTC)."],[[["\u003cp\u003eThe \u003ccode\u003esize()\u003c/code\u003e function returns the number of elements (e.g., images) in an Earth Engine ImageCollection.\u003c/p\u003e\n"],["\u003cp\u003eIt takes one argument, the collection to count, and returns an integer representing the number of elements.\u003c/p\u003e\n"],["\u003cp\u003e\u003ccode\u003eee.ImageCollection.size()\u003c/code\u003e can be computationally intensive for large collections, potentially causing memory errors due to the need to generate all results for counting.\u003c/p\u003e\n"]]],[],null,["# ee.ImageCollection.size\n\nReturns the number of elements in the collection.\n\n\u003cbr /\u003e\n\n| Usage | Returns |\n|--------------------------|---------|\n| ImageCollection.size`()` | Integer |\n\n| Argument | Type | Details |\n|--------------------|-------------------|--------------------------|\n| this: `collection` | FeatureCollection | The collection to count. |\n\nExamples\n--------\n\n### Code Editor (JavaScript)\n\n```javascript\n// Note: ee.ImageCollection.size may take a lot of time and memory to run,\n// since it must generate all of the results in order to count them. Large\n// collections and/or complex computations can produce memory limitation\n// errors.\n\n// A Landsat 8 TOA image collection (1 year of images at a specific point).\nvar col = ee.ImageCollection('LANDSAT/LC08/C02/T1_TOA')\n .filterBounds(ee.Geometry.Point(-90.70, 34.71))\n .filterDate('2020-01-01', '2021-01-01');\n\n// Get the number of images in the collection.\nprint('Number of images', col.size());\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# Note: ee.ImageCollection.size may take a lot of time and memory to run,\n# since it must generate all of the results in order to count them. Large\n# collections and/or complex computations can produce memory limitation\n# errors.\n\n# A Landsat 8 TOA image collection (1 year of images at a specific point).\ncol = ee.ImageCollection('LANDSAT/LC08/C02/T1_TOA').filterBounds(\n ee.Geometry.Point(-90.70, 34.71)\n ).filterDate('2020-01-01', '2021-01-01')\n\n# Get the number of images in the collection.\nprint('Number of images', col.size().getInfo())\n```"]]
