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Abstract
Hillshading with Points and Lines
Track: Cartography and Map Production
Author(s): Patrick Kennelly, A. Kimerling
Points and lines can both be used to produce variations in tones that create a hillshading effect. Point symbols of varying brightness create hillshading. Arrows as point symbols can produce the hillshading effect seen in hachure maps. Researchers have automated two methods involving contours devised by Japanese cartographer Kitiro Tanaka with Esri software. Illuminated contours draw white-and-black contours on a gray background to represent illuminated and nonilluminated topography. "Inclined" contours produce hillshading with traces resulting from intersecting topography with a series of parallel, inclined planes, then projecting those traces orthogonally onto a horizontal plane.
Patrick Kennelly
Montana Tech of the University of Montana
Montana Bureau of Mines and Geology
1300 W. Park St.
Butte , MT 59701
USA
Phone: (406) 496-2986
Fax: (406) 496-4451
E-mail: pkennelly@mtech.edu
A. Kimerling
Oregon State University
Geosciences
104 Wilkinson Hall
Corvallis 97331
USA
Phone: (541) 737-1225
E-mail: kimerlia@geo.orst.edu