Pengumuman: Semua project nonkomersial yang terdaftar untuk menggunakan Earth Engine sebelum
15 April 2025 harus
memverifikasi kelayakan nonkomersial untuk mempertahankan akses Earth Engine.
ee.Number.cos
Tetap teratur dengan koleksi
Simpan dan kategorikan konten berdasarkan preferensi Anda.
Menghitung kosinus input dalam radian.
| Penggunaan | Hasil |
|---|
Number.cos() | Angka |
| Argumen | Jenis | Detail |
|---|
ini: input | Angka | Nilai input. |
Contoh
Code Editor (JavaScript)
// Input angle in radians.
print('Cosine of 0', ee.Number(0).cos()); // 1
print('Cosine of π/2', ee.Number(Math.PI/2).cos()); // 0 (nearly)
print('Cosine of π', ee.Number(Math.PI).cos()); // -1
// Convert degrees to radians.
var degrees = 45;
var radians = degrees * (Math.PI/180);
print('Cosine of 45 degrees', ee.Number(radians).cos()); // 0.707106781
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)
import math
# Input angle in radians.
print('Cosine of 0:', ee.Number(0).cos().getInfo()) # 1
print('Cosine of π/2:', ee.Number(math.pi/2).cos().getInfo()) # 0 (nearly)
print('Cosine of π:', ee.Number(math.pi).cos().getInfo()) # -1
# Convert degrees to radians.
degrees = 45
radians = degrees * (math.pi/180)
# 0.707106781
print('Cosine of 45 degrees:', ee.Number(radians).cos().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\u003eThis function calculates the cosine of a given input value in radians, returning the result as a number.\u003c/p\u003e\n"],["\u003cp\u003eIt accepts a single argument, the input value, which should be a number representing the angle in radians.\u003c/p\u003e\n"],["\u003cp\u003eExamples demonstrate its usage in JavaScript and Python, including converting degrees to radians for input.\u003c/p\u003e\n"],["\u003cp\u003eThe function is accessible within Earth Engine code editor, Python, and Colab environments.\u003c/p\u003e\n"]]],["The `cos()` method computes the cosine of a numerical input, which must be in radians. It returns a numerical value representing the cosine. Input angles can be provided directly in radians or converted from degrees using the formula: `degrees * (π/180)`. The provided examples illustrate using `cos()` with values like 0, π/2, and π, and demonstrates calculating the cosine of 45 degrees after converting it to radians.\n"],null,["# ee.Number.cos\n\nComputes the cosine of the input in radians.\n\n\u003cbr /\u003e\n\n| Usage | Returns |\n|----------------|---------|\n| Number.cos`()` | Number |\n\n| Argument | Type | Details |\n|---------------|--------|------------------|\n| this: `input` | Number | The input value. |\n\nExamples\n--------\n\n### Code Editor (JavaScript)\n\n```javascript\n// Input angle in radians.\nprint('Cosine of 0', ee.Number(0).cos()); // 1\nprint('Cosine of π/2', ee.Number(Math.PI/2).cos()); // 0 (nearly)\nprint('Cosine of π', ee.Number(Math.PI).cos()); // -1\n\n// Convert degrees to radians.\nvar degrees = 45;\nvar radians = degrees * (Math.PI/180);\nprint('Cosine of 45 degrees', ee.Number(radians).cos()); // 0.707106781\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\nimport math\n\n# Input angle in radians.\nprint('Cosine of 0:', ee.Number(0).cos().getInfo()) # 1\nprint('Cosine of π/2:', ee.Number(math.pi/2).cos().getInfo()) # 0 (nearly)\nprint('Cosine of π:', ee.Number(math.pi).cos().getInfo()) # -1\n\n# Convert degrees to radians.\ndegrees = 45\nradians = degrees * (math.pi/180)\n# 0.707106781\nprint('Cosine of 45 degrees:', ee.Number(radians).cos().getInfo())\n```"]]
