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ee.Terrain.hillshade
使用集合让一切井井有条
根据您的偏好保存内容并对其进行分类。
根据 DEM 计算简单的山体阴影。
| 用法 | 返回 |
|---|
ee.Terrain.hillshade(input, azimuth, elevation) | 图片 |
| 参数 | 类型 | 详细信息 |
|---|
input | 图片 | 高程图片，以米为单位。 |
azimuth | 浮点数，默认值：270 | 光照方位角（以度为单位，从正北开始测量）。 |
elevation | 浮点数，默认值：45 | 光照仰角（以度为单位）。 |
示例
代码编辑器 (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 设置
如需了解 Python API 和如何使用 geemap 进行交互式开发，请参阅
Python 环境页面。
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
如未另行说明，那么本页面中的内容已根据知识共享署名 4.0 许可获得了许可，并且代码示例已根据 Apache 2.0 许可获得了许可。有关详情，请参阅 Google 开发者网站政策。Java 是 Oracle 和/或其关联公司的注册商标。
最后更新时间 (UTC)：2025-07-26。
[null,null,["最后更新时间 (UTC)：2025-07-26。"],[[["\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```"]]
