Pengumuman: Semua project nonkomersial yang terdaftar untuk menggunakan Earth Engine sebelum
15 April 2025 harus
memverifikasi kelayakan nonkomersial untuk mempertahankan akses Earth Engine.
ee.FeatureCollection.size
Tetap teratur dengan koleksi
Simpan dan kategorikan konten berdasarkan preferensi Anda.
Menampilkan jumlah elemen dalam koleksi.
| Penggunaan | Hasil |
|---|
FeatureCollection.size() | Bilangan Bulat |
| Argumen | Jenis | Detail |
|---|
ini: collection | FeatureCollection | Koleksi yang akan dihitung. |
Contoh
Code Editor (JavaScript)
// FeatureCollection of power plants in Belgium.
var fc = ee.FeatureCollection('WRI/GPPD/power_plants')
.filter('country_lg == "Belgium"');
print('Number of power plants in Belgium', fc.size());
Penyiapan Python
Lihat halaman
Lingkungan Python untuk mengetahui informasi tentang Python API dan penggunaan
geemap untuk pengembangan interaktif.
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('Number of power plants in Belgium:', fc.size().getInfo())
Kecuali dinyatakan lain, konten di halaman ini dilisensikan berdasarkan Lisensi Creative Commons Attribution 4.0, sedangkan contoh kode dilisensikan berdasarkan Lisensi Apache 2.0. Untuk mengetahui informasi selengkapnya, lihat Kebijakan Situs Google Developers. Java adalah merek dagang terdaftar dari Oracle dan/atau afiliasinya.
Terakhir diperbarui pada 2025-07-26 UTC.
[null,null,["Terakhir diperbarui pada 2025-07-26 UTC."],[[["\u003cp\u003eReturns the number of elements (features) within a given FeatureCollection.\u003c/p\u003e\n"],["\u003cp\u003eThe method is called using \u003ccode\u003esize()\u003c/code\u003e on a FeatureCollection and returns an Integer value.\u003c/p\u003e\n"],["\u003cp\u003eUsage examples are provided in JavaScript and Python demonstrating how to retrieve the size of a FeatureCollection.\u003c/p\u003e\n"]]],["The `size()` method calculates the number of elements within a `FeatureCollection`. It takes the collection as input and returns an integer representing the total count. For instance, when applied to a `FeatureCollection` of power plants in Belgium, `fc.size()` returns the number of power plants. Examples provided demonstrate its usage in both JavaScript and Python environments, showcasing how to retrieve and print the collection's size.\n"],null,["# ee.FeatureCollection.size\n\nReturns the number of elements in the collection.\n\n\u003cbr /\u003e\n\n| Usage | Returns |\n|----------------------------|---------|\n| FeatureCollection.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// FeatureCollection of power plants in Belgium.\nvar fc = ee.FeatureCollection('WRI/GPPD/power_plants')\n .filter('country_lg == \"Belgium\"');\n\nprint('Number of power plants in Belgium', fc.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# FeatureCollection of power plants in Belgium.\nfc = ee.FeatureCollection('WRI/GPPD/power_plants').filter(\n 'country_lg == \"Belgium\"')\n\nprint('Number of power plants in Belgium:', fc.size().getInfo())\n```"]]
