I'd like to use the data "hidden" when setting rollperiod shown as errorbars.
It is not possible for now (or at least not as easily as adding a boolean)
Since my explanations are shitty, here an example i made using gimp:
On this example, data are from a csv with values taken every 15mn and rollperiod is set at 90, which is approximately a day (24*4=96 datas a day).
The fake errorbars you see is the very same data with rollperiod to 1.