Elevation data Noordwaard 2010

Elevation model of project Noordwaard in the form of a grid with a resolution of 2 meters where the height value is included in metres. A digital height model (DHM) is a file where the height is represented according to a regular, rectangular grid. Each cell of the grid (also called a grid cell) is given a height value. This height value is calculated from the surrounding laser points of the filtered base file. The technique used for this is a so-called "weighted mean interpolation". More information and an explanation about the interpolation can be found in the manual "the grids of the AHN" which can be found at www.ahn.nl. If there are no laser points near a grid cell, the cell remains empty (the cell gets a "nodata" value). It is important to know that the value of a 2x2 meter grid cell is calculated from several laser points (the number depends on the point density of the base file). As a result, the influence of the measurement noise and outliers decreases and a slight degree of flattening occurs. For further information see quality document

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Last Updated August 30, 2023, 14:19 (UTC)
Created July 13, 2023, 18:20 (UTC)
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