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Tobler's hiking function – walking speed vs. slope angle chart. Tobler's hiking function is an exponential function determining the hiking speed, taking into account the slope angle. [1] [2] [3] It was formulated by Waldo Tobler. This function was estimated from empirical data of Eduard Imhof. [4]
Tobler was an avid hiker, and combined this with his interest flow and movement to generate "Tobler's hiking function", also known as "Tobler's walking rule". [ 46 ] [ 84 ] [ 85 ] In this research, Tobler used himself as a subject, and was published the results in a 1993 paper. [ 84 ]
Prior to Tobler's work, cartograms were created by hand (as they occasionally still are). The National Center for Geographic Information and Analysis located on the UCSB campus maintains an online Cartogram Central Archived 2016-10-05 at the Wayback Machine with resources regarding cartograms.
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A chart pattern or price pattern is a pattern within a chart when prices are graphed. In stock and commodity markets trading, chart pattern studies play a large role during technical analysis. When data is plotted there is usually a pattern which naturally occurs and repeats over a period. Chart patterns are used as either reversal or ...
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A trailhead signage that shows the grade of a walking path at a park in Sydney, Australia.. A trail difficulty rating system, also known as walking track grading system, walk gradings or trail grades, is a classification system for trails or walking paths based on their relative technical and physical difficulty. [1]