Re: arpeggio on single note

[Noeck]

>> http://lilypond.org/doc/v2.18/Documentation/notation/expressive-marks-as-lines#Selected-Snippets-33
> 
> Yes, this shows the cross-staff arpeggio. But the examples there have
> always two notes in each staff. It would be interesting how to notate an
> arpeggio when only one note is e.g. in the bass staff.

Exactly the same. The documentation could show one such case, too. But it is not
different from the chord cases as you can see here:

\new PianoStaff \relative c'' <<
  \set PianoStaff.connectArpeggios = ##t
  \new Staff { c4\arpeggio }
  \new Staff { c,4\arpeggio }
>>

It is always the connectArpeggios property that matters.

Cheers,
Joram