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GPS-based online trail system
Here's a map of the xc ski trail system around our mountain cabin in
Rauland, Telemark: http://www.visitrauland.com/?p=73_94_LL&pr=73_290_2 Our cabin is located about 100 m from the major trail junction just above the 'hotell' part of the two-line 'Rauland Høgfjellshotell' entry. :-) Two+ days ago we had the last snowfall, so early that morning the track setters started working. They have GPSs in all of them, linked up with the data service of the GSM cell network, so you can follow their progress in real time (more or less). Here is the resulting trail map: http://www.visitrauland.com/?p=73_94_MM&pr=73_94_104 The green track logs are from trails that have been set with a wide machine, with classic track on the side(s) leaving plenty of room for skating in the middle, while the yellow trails are about 2.5 m wide, with just two classic tracks. Terje -- - "almost all programming can be viewed as an exercise in caching" |
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GPS-based online trail system
For me that's very interesting, for two reasons. After the Birken,
if weather is good, my Norwegian friends and I will likely spend a few days at their `cabin'. It may be not too far from the area of those maps. I should try to find out. The other reason is that I have been experimanting with this Suunto x9i that I got recently. It seems very good on the altimeter side, using barometric more than the GPS, and quite good for skiing with the GPS. But skiing reasonably fast in `spaghetti' ski areas (many small loops, lots of direction changes) certainly gives it some problems. This is a much smaller scale than your map which I guess is about 15 km square (the trails part). Some of the problems are probably due to trees and some to it just being purely a wris****ch thing, antenna and all. But I imagine going along fairly fast on very twisty trails would give any GPS a problem with producing an accurate map of all the little loops. I'm planning to turn it on at the Birken and see if my guess of about 1000m/3300ft in total elevation gain is nearly correct. My plan to similarly test the Keskinada course in six days time has now been somewhat foiled. The new course due to poor snow is still 53km, but I'd guess more like 1800 than 2300 ft. total gain. I'll GPS/ elevation profile it anyway. Both those consist mostly of long straight sections, so the problem above shouldn't arise. Best, Peter On Feb 11, 3:27 am, Terje Mathisen wrote: Here's a map of the xc ski trail system around our mountain cabin in Rauland, Telemark: http://www.visitrauland.com/?p=73_94_LL&pr=73_290_2 Our cabin is located about 100 m from the major trail junction just above the 'hotell' part of the two-line 'Rauland Høgfjellshotell' entry. :-) Two+ days ago we had the last snowfall, so early that morning the track setters started working. They have GPSs in all of them, linked up with the data service of the GSM cell network, so you can follow their progress in real time (more or less). Here is the resulting trail map: http://www.visitrauland.com/?p=73_94_MM&pr=73_94_104 The green track logs are from trails that have been set with a wide machine, with classic track on the side(s) leaving plenty of room for skating in the middle, while the yellow trails are about 2.5 m wide, with just two classic tracks. Terje -- - "almost all programming can be viewed as an exercise in caching" |
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