Passing only timed laps in Maths formulas

[Davvid]

Hello!

I'd like to ask if it is possible to insert only timed laps (without the out lap and in lap) to the Maths formulas ?

I don't want to include unreliable data from out- and in- laps in the Maths statistic functions but I can't figure out how to do it. Using function: range_is("Outings:Laps") chooses all samples, including data from out and in laps. And that's what I try to avoid.

Thanks in advance for reply.

Best regards.

[YuriK]

Hi
using stat_min(range_change(Outings:laps)) will give you the first lap - Out Lap
using stat_max(range_change(Outings:laps)) will give you the last lap - In Lap
you can use choose function to calculate a channel that will be valid for all laps except first and last (Out and In) laps

Regards!

[Davvid]

Hi!

First of all thank you very much for your help. I appreciate it a lot. But it appears that my knowledge of i2 is insufficient to cope with that "choose" function - I can't figure out what to use as first parameter.

Could you help me further with this ?

Thanks in advance.

[YuriK]

Hi,
Try to use something like the following

choose(range_change("Outings:Laps") != stat_min(range_change("Outings:Laps")) and range_change("Outings:Laps") != stat_max(range_change("Outings:Laps") ),
range_change("Outings:Laps"), invalid())

where
range_change("Outings:Laps") != stat_min(range_change("Outings:Laps")) -> not the first lap, the Out lap
range_change("Outings:Laps") != stat_max(range_change("Outings:Laps")) -> not the last lap , the In lap

If the condition is true, i.e. the lap is not Out or In lap, the output is range_change("Outings:Laps") which is basically lap number. If the condition is false, i.e. the lap is Out or In, the result is invalid.

When you select a function in Math, there is "Function Help" available to the right of the Expression window. It usually has some examples too.

Regards!

[EllenBiblo]

Yeah even I was not able to understand ,even I think my general maths concepts are not clear.Well after your last post it's quite clear now.

[Davvid]

Yeah, that's it. Thank you very much, YuriK.