Google Earth Engine ——数据全解析专辑（AHN Netherlands 0.5m DEM, Interpolated）荷兰0.5m 格网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 non-interpolated; the areas where objects have been removed are left blank and not filled with interpolated values. The point cloud was converted to a 0.5m grid using a squared inverse distance weighting method.

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。这个版本是非插值的；已移除对象的区域留空且未填充内插值。使用平方逆距离加权方法将点云转换为0.5m网格。

Dataset Availability

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

Dataset Provider

AHN

Collection Snippet

ee.Image("AHN/AHN2_05M_NON")

Resolution

0.5 meters

Bands Table

示例代码：

var dataset = ee.Image('AHN/AHN2_05M_NON');
var elevation = dataset.select('elevation');
var elevationVis = {
  min: -5.0,
  max: 30.0,
};
Map.setCenter(5.80258, 51.78547, 14);
Map.addLayer(elevation, elevationVis, 'Elevation');

原始影像：

DEM格网影像