[ gpsdrive ] No developer question, but a question about an older version of gpsdrive

[Guenther Meyer]

Am Samstag 03 November 2007 schrieb Sascha Silbe:
> On Sat, Nov 03, 2007 at 04:59:46PM +0100, Thomas Schönhütl wrote:
> > /*#define ROUTEREACH (0.02+10*groundspeed/(3600*milesconv))*/
> > #define ROUTEREACH1 (10*groundspeed/(3600*milesconv))
> > #define ROUTEREACH2 (15*groundspeed/(3600*milesconv))
> > #define ROUTEREACH3 (20*groundspeed/(3600*milesconv))
> > #define ROUTEREACH4 (30*groundspeed/(3600*milesconv))
>
> Using the lower limits of your speed "zones", I've done a 3-point
> interpolation:
>
> #define ROUTEREACH
> (((1/600)*groundspeed*groundspeed+(1/20)*groundspeed+(25/3))*groundspeed/(3
>600*milesconv))
>
hehe, this is the kind of nonlinear formula I mentioned to Thomas ;-)

good to have some math guys here!



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