Analyses of Orienteering Runs on 3D maps
ISBN 978-85-88783-11-9
Authors
1Petrovič, D.
1UNIVERSITY OF LJUBLJANA, FACULTY OF CIVIL AND GEODETIC ENG. Email: dusan.petrovic@fgg.uni-lj.si
Abstract
Orienteering runners use to say, that the real orienteering runner in the one who is able to spent more time discussing and analyzing his route after the run then spending time running course. Route analyse is very important part of technical training, with it runner can identify his mistakes, good decisions, compare his route choice and spent times to other competitors. There are some aids that support and enable easier analyse and comparison. Some of them base on the time comparing only, like Split Browser, where runners can only compare leg times between each pairs of control points to other competitors. Supported with actual route track between control points, either drawn on the map by competitor based on his memorized experience either captured using GNSS tracker and visualized e.g. in Route Gadget such analyse can clearly show, which competitor's route choice was better. Some applications, like Quick route also shows, based on GNSS tracking, the speed of competitor at every part of the course, so he might realize where and when he ran at full speed, where and for how long he spent time reading map, taking decisions, slowing etc. All such analyses base on presenting course track on the same map that was used for competition. Since the orienteering maps are, naturally, 2D plan presentations, relief, as one the most important factors for route choosing, is depicted with contour lines, and supported with symbols for special relief features. Competitors are used to read contours to guide themselves on the terrain, but sometimes might happen, especially in complex terrain with many relief changes (depressions, small hills, etc.), that they confuse and get the wrong impression of the terrain shape. The maps for running (competing) are standardized, but for further analyses we might use also different maps. We decided to test, how use of any kind and type of 3D maps can improve experience at analyzing competitors' tracks. As the very first, orienteering map in raster form was draped into Google Earth ® environment and then course track was added. Both trainers and competitors were asked to evaluate advantages and disadvantages of such analyse according to traditional one in 2D environment. Analyse might lead to further ideas about more complex 3D analyses and also possibilities of live 3D following of competitors at races.
Keywords
orienteering; map use; 3D map