Re: problem with cross-staff stems

[Janek Warchoł]

2011/6/9 Janek Warchoł <address@hidden>:
> Hi David,
>
> 2011/6/9 David Nalesnik <address@hidden>:
>> In the example below, I would like to have the quarter-note stems
>> joined from one staff to the other, with the stem direction of the
>> eighth-note figure pointing up.  (Down would look better in my
>> example, but I do need this particular arrangement for a more complex
>> passage.) Trouble is, the quarter-note stems in the lower staff will
>> not extend beyond the beam and the stems won’t join.  (Varying the
>> stem-length override just pushes the staves further apart.)  The
>> attached image shows the problem.
>
> Do you want something like in the attachment?
> I suggest this code (...)

PS overridding beam positions seems to work too:

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\version "2.14.0"

top = \relative c' {
 <<
   { r4 e e e }
   { s4
     \change Staff = "bottom"
     \override  Stem #'cross-staff = ##t
     \override Stem #'length = #20
     \override  NoteColumn #'ignore-collision = ##t
     c, c c
   }
 >>
}

bottom = \relative c' {
 \clef bass
 \voiceOne % similar results with \voiceThree or \stemUp
 \override Beam #'positions = #'(4.5 . 4.5)
 g8 a g a g a g a
}

\new PianoStaff <<
 \new Staff = "top" {
   \top
 }
 \new Staff = "bottom" {
   \bottom
 }
 >>
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

HTH,
Janek