topography, DEM, catography, LiDAR
The purpose of the hillshade is to provide topographic relief for maps, figures, and visualizations. The hillshade can also be used to capture features (roads, buildings, bridges), and to locate geological features such as landslides, stream channel characteristics, and earth movement. This data set is suitable for detailed work. Visualizations of the raw point clouds would be appropriate for those looking for sub-meter accuracy.
The hillshade was generated from the 1 meter bare-earth digital elevation model (DEM) based on the 2008 LiDAR flight over the Andrews Experimental Forest. The hillshade is at 1 meter resolution, and provides a detailed visualization of the forest with the vegetation removed. The hillshade command in spatial analyst was used with a sun azmuth of 345 degress and the altitude was set for 65 degrees.
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|Maximum (zoomed in)||1:5,000|
|Minimum (zoomed out)||1:50,000|
The LiDAR lazer data was collect by airplane on August 10 and 11, 2008.
The 1 meter bare-earth DEM was used to produce this dataset (hja_be). The hillshade command in spatial analyst was used with a sun azmuth of 345 degress and the altitude was set for 65 degrees.
Internal feature number.
value for shading based on solar azimuth and angle. The value represents illumination, where 0 = shadow, and 255 = full sunlight.
number of times a value code occures in the grid