Terrain - Multi-Directional Hillshade

This layer provides a hillshaded surface generated dynamically using a multi-directional hillshade server-side function on the World Elevation Terrain layer. This algorithm computes hillshade from six different directions, where each hillshade is multiplied by a weight and thereafter the sum of all is normalized to produce the final output. The z factor is varied based on scale so that a suitable hillshade is visible at all scales. This layer is useful for visualization of the Terrain because it is easy to interpret and use as a base layer in applications and maps. For more information about uses, refer Introducing Esri’s Next Generation Hillshade. Note: If you intend to use it as basemap, consider using the tiled version of this layer i.e. World Hillshade, which provides fast and performant rendering. Update Frequency: Quarterly Coverage: World/Global Data Sources: This layer is compiled from a variety of best available sources from several data providers. To see the coverage and extents of various datasets comprising this service in an interactive map, see World Elevation Coverage Map. What can you do with this layer? Use for Visualization: Yes. Multi-Directional Hillshade provides a quick indication of the shape of the terrain at a range of map scales. The image service can be added to web applications or other maps to enhance contextual understanding. For basemap needs, use World Hillshade instead. Use for Analysis: No. A hillshade is generally not used for analysis. This layer is part of a larger collection of elevation layers that you can use to perform a variety of mapping and analysis tasks.本图层基于全球高程地形（World Elevation Terrain）图层，通过服务端多方向山体阴影（multi-directional hillshade）算法动态生成晕渲地表。该算法从六个不同方向计算山体阴影，将每一层山体阴影结果乘以权重后求和，再进行归一化处理以得到最终输出结果。Z因子会根据比例尺动态调整，确保在所有比例尺下均能呈现清晰合适的山体阴影效果。本图层便于解读，可作为应用程序与地图的基础图层，适用于地形可视化场景。如需了解更多应用细节，请参考《Esri下一代山体阴影产品介绍》（Introducing Esri’s Next Generation Hillshade）。注意：若需将其用作底图，请使用本图层的瓦片版本——全球山体阴影（World Hillshade），其可实现高效快速的渲染。更新频率：每季度 覆盖范围：全球/世界 数据源：本图层整合了多家数据供应商提供的各类最优可用数据源。如需在交互式地图中查看组成该服务的各数据集的覆盖范围与范围，请访问《全球高程覆盖地图》（World Elevation Coverage Map）。本图层可用于可视化：是。多方向山体阴影可快速呈现不同地图比例尺下的地形形态。可将该影像服务添加至Web应用或其他地图中，以提升场景辨识度。若需作为底图，请改用全球山体阴影。本图层不可用于分析：山体阴影通常不用于分析任务。本图层属于更大范围的高程图层集合的一部分，您可借助该集合完成各类制图与分析工作。