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ee.Terrain.hillshade
透過集合功能整理內容
你可以依據偏好儲存及分類內容。
從 DEM 計算簡單的陰影。
| 用量 | 傳回 |
|---|
ee.Terrain.hillshade(input, azimuth, elevation) | 圖片 |
| 引數 | 類型 | 詳細資料 |
|---|
input | 圖片 | 海拔高度圖片，單位為公尺。 |
azimuth | 浮點數，預設值為 270 | 從北方算起的照明方位角 (以度為單位)。 |
elevation | 浮點數，預設值為 45 | 以度為單位的照明仰角。 |
範例
程式碼編輯器 (JavaScript)
var elevation = ee.Image('NOAA/NGDC/ETOPO1').select('bedrock');
var exaggeration = 20;
var hillshade = ee.Terrain.hillshade(elevation.multiply(exaggeration));
Map.addLayer(hillshade, null, 'ETOPO1 Hillshade');
Python 設定
請參閱
Python 環境頁面，瞭解 Python API 和如何使用 geemap 進行互動式開發。
import ee
import geemap.core as geemap
Colab (Python)
elevation = ee.Image('NOAA/NGDC/ETOPO1').select('bedrock')
exaggeration = 20
hillshade = ee.Terrain.hillshade(elevation.multiply(exaggeration))
m = geemap.Map()
m.add_layer(hillshade, None, 'ETOPO1 Hillshade')
m
除非另有註明，否則本頁面中的內容是採用創用 CC 姓名標示 4.0 授權，程式碼範例則為阿帕契 2.0 授權。詳情請參閱《Google Developers 網站政策》。Java 是 Oracle 和/或其關聯企業的註冊商標。
上次更新時間：2025-07-26 (世界標準時間)。
[null,null,["上次更新時間：2025-07-26 (世界標準時間)。"],[[["\u003cp\u003eComputes a hillshade, which is a shaded relief map, from a Digital Elevation Model (DEM) to visualize terrain.\u003c/p\u003e\n"],["\u003cp\u003eThe \u003ccode\u003eee.Terrain.hillshade()\u003c/code\u003e function takes an elevation image, azimuth, and elevation as input to generate the hillshade.\u003c/p\u003e\n"],["\u003cp\u003eUsers can customize the illumination direction by specifying the azimuth (direction) and elevation (angle) of the light source.\u003c/p\u003e\n"],["\u003cp\u003eAn example is provided using the ETOPO1 bedrock elevation data to demonstrate hillshade creation and visualization.\u003c/p\u003e\n"]]],["The core content details how to compute a hillshade from a digital elevation model (DEM) using the `ee.Terrain.hillshade` function. This function takes an elevation image (`input`), an illumination azimuth (`azimuth`, default 270 degrees), and an illumination elevation (`elevation`, default 45 degrees) as arguments, and it returns a hillshade image. The examples showcase using elevation data, multiplying it by an exaggeration factor, then applying the function to produce the final hillshade image.\n"],null,["# ee.Terrain.hillshade\n\nComputes a simple hillshade from a DEM.\n\n\u003cbr /\u003e\n\n| Usage | Returns |\n|------------------------------------------------------------|---------|\n| `ee.Terrain.hillshade(input, `*azimuth* `, `*elevation*`)` | Image |\n\n| Argument | Type | Details |\n|-------------|---------------------|-------------------------------------------------|\n| `input` | Image | An elevation image, in meters. |\n| `azimuth` | Float, default: 270 | The illumination azimuth in degrees from north. |\n| `elevation` | Float, default: 45 | The illumination elevation in degrees. |\n\nExamples\n--------\n\n### Code Editor (JavaScript)\n\n```javascript\nvar elevation = ee.Image('NOAA/NGDC/ETOPO1').select('bedrock');\nvar exaggeration = 20;\nvar hillshade = ee.Terrain.hillshade(elevation.multiply(exaggeration));\nMap.addLayer(hillshade, null, 'ETOPO1 Hillshade');\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\nelevation = ee.Image('NOAA/NGDC/ETOPO1').select('bedrock')\nexaggeration = 20\nhillshade = ee.Terrain.hillshade(elevation.multiply(exaggeration))\nm = geemap.Map()\nm.add_layer(hillshade, None, 'ETOPO1 Hillshade')\nm\n```"]]
