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

Hi,

now I have set ONE definition in gpsdrive.h (the first one with 3-point 
interpolation) and the original lines in gpsdrive.c (routes.c).

I will try it tomorrow and then will report about my experiences.

I am astonished about the knowledge of all these people and developers 
here in this mailing list, because I am only user of GpsDrive ...

Thank you again,

Thomas.


Guenther Meyer wrote:
> 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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