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TheCartographer

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  1. Hi All, ...the discreptencies with pedometers in general are very real...Pedometers don't work accurately unless you using one on flat ground (as many of you have already stated)...and you also must keep your stride length consistent for the duration of the entire trip(which you have also stated). Marky hits the nail on the button when he says that gps units should not only measure distance travelled from point A to B using pre-programmed waypoints but also measures your virtual distance travelled simultaneously as you are in the process of moving the unit through space. Now his real point comes when explaining that handheld gps units with map download, and map reading capabilities, and more specifically topomap reading capabilities which if in effect you are travelling in an actual area on the planet for which you have a digital map of already installed into the gps units hard drive, then maybe the gps would also simultaneously actually take into account your elevation differences as you are moving the unit through space. But then again the accuracy with which it will measure your distance travelled will only be as good as the topo map....depending on what scale it is...you would need at the very least a 1:10,000 scale topo to even start being accurate within 50 meters(maybe if your lucky). The question is: if you are rock climbing up a 90 degree wall...would it still record the ditance travelled, from where you started to climb until you ended your climb. The Satelites signals available for civillian use will not be able to perceive elevation diretly(or at least i do not believe that we have it as a feature..yet)...unless you have a digital altimeter working hand in hand with the original gps software. Then and only then may you have a much more accurate system for effectively recording divided distances and total distance travelled. Wether or not you are trying to reach a pre-programmed way point, or just walking around and trying to lose yourself, without having any particular destination in mind and therefore without any pre-programmed destinations in your unit! Does anyone know of any other discreptencies while using either pedometers...gps units inacurately measuring your distances? TheCartographer
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