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Relief Shading Relief shading uses shadows to bring out the topography of the terrain from a digital elevation model (DEM). It is creating using a technique called hillshading. Variations in hillshade give the elevation a 3D effect displaying hilly or flat areas of the data. Slope Slope displays the inclination or steepness of a surface, […]
Exploring the slopes of roofs on residential and commercial buildings. Using the Environment Agency’s opensource 1 m LIDAR data, I calculate the roof angle on the Cardington Airship Sheds to be about 33 degrees from the horizontal. If the data were finer at a resolution of 0.5 m or 0.25 m, results would be more accurate on […]