Google Earth Engine ——数据全解析专辑（AHN Netherlands 0.5m DEM, Interpolated）荷兰0.5m DEM！

The AHN DEM is a 0.5m DEM covering the Netherlands. It was generated from LIDAR data taken in the spring between 2007 and 2012.

It contains ground level samples with all other items above ground (such as buildings, bridges, trees etc.) removed. This version is interpolated; the areas where objects have been removed are filled with interpolated values. The point cloud was converted to a 0.5m grid using a squared inverse distance weighting method. Note: This dataset does not include a small number of tiles listed in the manifest that are only available at a lower resolution.

AHN DEM 是覆盖荷兰的 0.5m DEM。它是根据 2007 年至 2012 年春季拍摄的 LIDAR 数据生成的。 它包含地面样本，地面上的所有其他项目（例如建筑物、桥梁、树木等）均已移除。这个版本是内插的；已移除对象的区域填充有内插值。使用平方逆距离加权方法将点云转换为0.5m网格。注意：此数据集不包括清单中列出的少量仅在较低分辨率下可用的图块。

Dataset Availability

2012-01-01T00:00:00 - 2012-01-01T00:00:00

Dataset Provider

​​AHN​​

Collection Snippet

​​ee.Image("AHN/AHN2_05M_INT")​​

Dataset Availability

2012-01-01T00:00:00 - 2012-01-01T00:00:00

Dataset Provider

​​AHN​​

Collection Snippet

Copied

​​ee.Image("AHN/AHN2_05M_INT")​​

Resolution

0.5 meters

Bands Table

The datasets of the AHN are available as Open Data. This means that the data can be used by anyone for free and without restrictions. For more information visit the ​​Open Data​​​ page. Downloads are available under the terms of the ​​CC-0 license​​.

代码：

var dataset = ee.Image('AHN/AHN2_05M_INT');
var elevation = dataset.select('elevation');
var elevationVis = {
  min: -5.0,
  max: 30.0,
};
Map.setCenter(5.76583, 51.855276, 16);
Map.addLayer(elevation, elevationVis, 'Elevation');

原始影像：

 DEM