Transform to samples

[Lyna]

Hi,

Referring to the given example, '$condition.transformToSamples($capsule -> sample($capsule.getStart(), $capsule.duration()), 1d)', how do I plot the starting value instead of the duration? 

Thank you.

[Sharlinda Salim]

Hi Lyna,

Thank you for your question. 

In order to plot the starting value, your formula will be like this '$condition.transformToSamples($capsule -> sample($capsule.getStart(), $signal.toScalars($capsule).first()), 1d)'.

The command '$signal.toScalars($capsule).first()' will get the first value in each capsules. Alternatively, you can also write it as '$signal.toScalars($capsule).pick()'.

Hope this helps.

[Ben Johnson]

Getting the value of a signal at the start of each capsule is even easier using the aggregate() function. For example:

In R20

$signal.aggregate(Stat.ValueStart, $condition, PositionInCapsule.StartOfCapsule)

In R21

$signal.aggregate(startValue(), $condition, startKey())

 

[Nick Gigliotti]

One additional way to do this would be to use Signal from Condition and the "Value at Start" selection in the summary statistic field. 

This will give a formula similar to the one described by Ben if you look at the Item Properties of the new signal.