Re: Adding a temporal 3rd staff (for only 2 bars) in a Piano Staff

[Phil Holmes]

----- Original Message ----- 
From: "fauban" <address@hidden>
To: <address@hidden>
Sent: Sunday, August 22, 2010 10:52 AM
Subject: Adding a temporal 3rd staff (for only 2 bars) in a Piano Staff


> Hello Lilypond Community!
> I am typesetting a piano score.
> As most keyboard pieces, it begins with 2 staves, but measures 14 and 15
> would need a 3rd staff over the other two. (I am using the new PianoStaff
> command)
>
> I have tried to make something like an ossia staff, but it's not the same,
> as its bar lines are not connected to the ones of the two main staves.
>
> Here is an example of what I want to do (Debussy: Préludes - Book II, 
> No.1;
> taken from the IMSLP. Check the 1st page):
> http://imslp.info/files/imglnks/usimg/d/dd/IMSLP00510-Debussy_-_Preludes__Book_2.pdf


No doubt there are a number of ways of doing this by adding extra staves, 
but the way I would do it is by allowing LilyPond to remove empty staves. 
Here's an example:

\layout {
 \context {
   \RemoveEmptyStaffContext
   \override VerticalAxisGroup #'remove-first = ##t
 }
}
{
<<
\new PianoStaff <<
\new Staff {
  \clef "treble"
  \time 4/8
  R1*4/8 |
  \repeat unfold 4 { g''32 ( [ e''32 c''32 b'32 ) ] } |
  R1*4/8 \bar "|."
}
\new Staff {
 \clef "treble"
 \time 4/8
 \repeat unfold 4 { b'32 ( [ g'32 e'32 d'32 ) ] } \break |
 \repeat unfold 4 { b'32 ( [ g'32 e'32 d'32 ) ] } \break |
 \repeat unfold 4 { b'32 ( [ g'32 e'32 d'32 ) ] } \break |
 }
\new Staff {
 \clef "bass"
 \time 4/8
 \repeat unfold 4 { e32 ( [ g32 b32 c'32 ) ] } \break |
 \repeat unfold 4 { e32 ( [ g32 b32 c'32 ) ] } \break |
 \repeat unfold 4 { e32 ( [ g32 b32 c'32 ) ] } \break |
}
> >
}


--
Phil Holmes