Walking time in rugged terrain
Repository URI
Repository DOI
Change log
Authors
Rees, William
Description
Calculates the minimum time taken to walk from a given location within a Digital Elevation Model (DEM) to all other locations within the DEM. It assumes that walking speed depends only on the gradient of the terrain, using a simple model (Rees 2004a), and implements Dijkstra’s least-cost algorithm (Rees 2004b). It assumes that all areas within the DEM are equally navigable, so it will happily cross bodies of water, fences etc.
Version
1.0
Software / Usage instructions
The routine is written for the GNU Octave programming language and should therefore also work in MATLAB. It requires a Digital Elevation Model in ascii text format.
Keywords
Digital Elevation Model, Dijkstra algorithm, Footpaths, Least-cost path, Physiology