changing the length (height? positions? endpoints?) of an arpeggio

[Noeck]

Hi Kieren,

> \version "2.19.80"
> { <c' e' g'>1\arpeggio }

you can set the positions by hand (in staff spaces):

{
  <c' e' g'>1\arpeggio
  \once \override Staff.Arpeggio.positions = #'(-3 . 0)
  <c' e' g'>1\arpeggio
}


Cheers,
Joram