DETERMINING MINIMUM HIKING TIME USING DEM
ZSOLT MAGYARI-SÁSKA1, ŞTEFAN DOMBAY2
1 Babeş-Bolyai University, Faculty of Geography, Gheorgheni
Extension, Gheorgheni, Grădina Csiky fn., Romania,
zsmagyari@gmail.com
2 Babeş-Bolyai University, Faculty of Geography, Gheorgheni
Extension, Gheorgheni, Grădina Csiky fn., Romania,
dombay.istvan@gmail.com
Abstract: - Determining minimum hiking time using DEM. Minimum hiking time
calculus can be used to assess the maximum area where a lost person can be. Such
area delimitation can help rescue teams to efficiently organize their missions.
The two well known walking time rules was used to determine, compare and
correlate the obtained result in a test area. The calculated times has a high
correlation coefficient which makes possible a precise conversion between
Naismith and Tobler walking times. For delimiting the rescue area a graph based
modeling from a raster layer was implemented using R environment. The main
challenge in such a modeling is the efficient memory management as the use of
Dijkstra algorithm on directional costgraph requires high memory resources.
Key-Words: hiking time, accessibility, R environment, Dijkstra
algorithm
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