Filter Zero from multiple curves in User Chart

[saalmu...@gmail.com]

Hi Ale, 

i would like to remove the coffee break period (POWER = 0) from my user chart showing three curves: MPP6m% vs HRR% vs MPP6m%/HRR%. 

For the MPP6M% curve i use 

xx <- samples(SECS);

yy <- 100*smooth(samples(POWER), sma, backward, 81)/MMP6m;

yy <- yy[x>0];

xx <- xx[yy[i] > 0 ];

which works perfectly fine (only i can't the x-axis to show hh:mm:ss rather than seconds)

I can't use the same approach for HRR% because (luckily) my heartrate is never zero. 

How can i cut out the zero-power section of the ride from the heartrate curve?

Thanks

Juergen 

[Ale Martinez]

El miércoles, 17 de febrero de 2021 a la(s) 20:03:58 UTC-3, saalmu...@gmail.com escribió:

Hi Ale, 

i would like to remove the coffee break period (POWER = 0) from my user chart showing three curves: MPP6m% vs HRR% vs MPP6m%/HRR%. 

For the MPP6M% curve i use 

xx <- samples(SECS);

yy <- 100*smooth(samples(POWER), sma, backward, 81)/MMP6m;

yy <- yy[x>0];

xx <- xx[yy[i] > 0 ];

which works perfectly fine (only i can't the x-axis to show hh:mm:ss rather than seconds)

Change the x-axis from Continuous to Time 

I can't use the same approach for HRR% because (luckily) my heartrate is never zero. 

How can i cut out the zero-power section of the ride from the heartrate curve?

In the same way you filter the xx vector above using yy vector, something like: 

xx <- xx[samples(POWER)[i]>0] 

yy <- yy[samples(POWER)[i]>0] 

 

[saalmu...@gmail.com]

Hi Ale, 

thanks, the axes work! 

Great ! That works. 

It's quite slow, though. I suppose all the vector parsing ... ?

[Ale Martinez]

There are more efficient ways, but you should read the documentation, for example to precompute an index vector see https://github.com/GoldenCheetah/GoldenCheetah/wiki/UG_Special-Topics_Formula-Syntax-and-Expressions#filtering-out-zeroes-with-the-nonzero

[saalmu...@gmail.com]

Precomputing an index, lightening fast now! 

Thank you very much, Ale!

I use a sequence now for the X axis so i get a nice, continuous graph with the coffee break excluded. :-)