Pengumuman: Semua project nonkomersial yang terdaftar untuk menggunakan Earth Engine sebelum
15 April 2025 harus
memverifikasi kelayakan nonkomersial untuk mempertahankan akses Earth Engine.
ee.Kernel.square
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Menghasilkan kernel boolean berbentuk persegi.
| Penggunaan | Hasil |
|---|
ee.Kernel.square(radius, units, normalize, magnitude) | Kernel |
| Argumen | Jenis | Detail |
|---|
radius | Float | Radius kernel yang akan dibuat. |
units | String, default: "pixels" | Sistem pengukuran untuk kernel ('piksel' atau 'meter'). Jika kernel ditentukan dalam meter, kernel akan diubah ukurannya saat level zoom diubah. |
normalize | Boolean, default: benar (true) | Menormalisasi nilai kernel agar berjumlah 1. |
magnitude | Float, default: 1 | Menskalakan setiap nilai dengan jumlah ini. |
Contoh
Code Editor (JavaScript)
print('A square kernel', ee.Kernel.square({radius: 3}));
/**
* Output weights matrix (up to 1/100 precision for brevity)
*
* [0.02, 0.02, 0.02, 0.02, 0.02, 0.02, 0.02]
* [0.02, 0.02, 0.02, 0.02, 0.02, 0.02, 0.02]
* [0.02, 0.02, 0.02, 0.02, 0.02, 0.02, 0.02]
* [0.02, 0.02, 0.02, 0.02, 0.02, 0.02, 0.02]
* [0.02, 0.02, 0.02, 0.02, 0.02, 0.02, 0.02]
* [0.02, 0.02, 0.02, 0.02, 0.02, 0.02, 0.02]
* [0.02, 0.02, 0.02, 0.02, 0.02, 0.02, 0.02]
*/
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)
from pprint import pprint
print('A square kernel:')
pprint(ee.Kernel.square(**{'radius': 3}).getInfo())
# Output weights matrix (up to 1/100 precision for brevity)
# [0.02, 0.02, 0.02, 0.02, 0.02, 0.02, 0.02]
# [0.02, 0.02, 0.02, 0.02, 0.02, 0.02, 0.02]
# [0.02, 0.02, 0.02, 0.02, 0.02, 0.02, 0.02]
# [0.02, 0.02, 0.02, 0.02, 0.02, 0.02, 0.02]
# [0.02, 0.02, 0.02, 0.02, 0.02, 0.02, 0.02]
# [0.02, 0.02, 0.02, 0.02, 0.02, 0.02, 0.02]
# [0.02, 0.02, 0.02, 0.02, 0.02, 0.02, 0.02]
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\u003eGenerates a square-shaped kernel with a specified radius for use in image processing.\u003c/p\u003e\n"],["\u003cp\u003eThe kernel can be defined in either pixels or meters, with meter-based kernels resizing based on zoom level.\u003c/p\u003e\n"],["\u003cp\u003eKernel values are normalized to sum to 1 by default, ensuring consistent results across different kernel sizes.\u003c/p\u003e\n"],["\u003cp\u003eUsers can control the kernel's magnitude by scaling each value, providing flexibility for various applications.\u003c/p\u003e\n"]]],[],null,["# ee.Kernel.square\n\nGenerates a square-shaped boolean kernel.\n\n\u003cbr /\u003e\n\n| Usage | Returns |\n|-----------------------------------------------------------------------|---------|\n| `ee.Kernel.square(radius, `*units* `, `*normalize* `, `*magnitude*`)` | Kernel |\n\n| Argument | Type | Details |\n|-------------|---------------------------|-------------------------------------------------------------------------------------------------------------------------------------------------------|\n| `radius` | Float | The radius of the kernel to generate. |\n| `units` | String, default: \"pixels\" | The system of measurement for the kernel ('pixels' or 'meters'). If the kernel is specified in meters, it will resize when the zoom-level is changed. |\n| `normalize` | Boolean, default: true | Normalize the kernel values to sum to 1. |\n| `magnitude` | Float, default: 1 | Scale each value by this amount. |\n\nExamples\n--------\n\n### Code Editor (JavaScript)\n\n```javascript\nprint('A square kernel', ee.Kernel.square({radius: 3}));\n\n/**\n * Output weights matrix (up to 1/100 precision for brevity)\n *\n * [0.02, 0.02, 0.02, 0.02, 0.02, 0.02, 0.02]\n * [0.02, 0.02, 0.02, 0.02, 0.02, 0.02, 0.02]\n * [0.02, 0.02, 0.02, 0.02, 0.02, 0.02, 0.02]\n * [0.02, 0.02, 0.02, 0.02, 0.02, 0.02, 0.02]\n * [0.02, 0.02, 0.02, 0.02, 0.02, 0.02, 0.02]\n * [0.02, 0.02, 0.02, 0.02, 0.02, 0.02, 0.02]\n * [0.02, 0.02, 0.02, 0.02, 0.02, 0.02, 0.02]\n */\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\nfrom pprint import pprint\n\nprint('A square kernel:')\npprint(ee.Kernel.square(**{'radius': 3}).getInfo())\n\n# Output weights matrix (up to 1/100 precision for brevity)\n\n# [0.02, 0.02, 0.02, 0.02, 0.02, 0.02, 0.02]\n# [0.02, 0.02, 0.02, 0.02, 0.02, 0.02, 0.02]\n# [0.02, 0.02, 0.02, 0.02, 0.02, 0.02, 0.02]\n# [0.02, 0.02, 0.02, 0.02, 0.02, 0.02, 0.02]\n# [0.02, 0.02, 0.02, 0.02, 0.02, 0.02, 0.02]\n# [0.02, 0.02, 0.02, 0.02, 0.02, 0.02, 0.02]\n# [0.02, 0.02, 0.02, 0.02, 0.02, 0.02, 0.02]\n```"]]
