Re: vertical spacing of rests

[Peter Selinger]

Trevor Daniels wrote:
> 
> address@hidden (Peter Selinger) writes:
> 
> > this is a true newbie question. I am trying to engrave two polyphonic
> > voices on a single staff. Since the two voices have all their rests in
> > common, I only want to typeset each rest once, so I use spacer rests
> > in the second voice. Still the vertical spacing is such that all the
> > rests are put near the top of the staff. I would like them to appear
> > in their "normal" positions.
> >
> > From the manual, I know two ways to do this. Solution 1 is to enclose
> > each rest between \oneVoice and \voiceOne, forcing standard vertical
> > spacing:
> >
> > Solution 2 is to specify an explicit vertical position for each rest.
> 
> > Neither solution is particularly elegant, as they both require every
> > rest to be marked up individually. Is there a global way to turn off
> > vertical spacing for rests in a context, i.e., some command whose
> > effect would be to make notes behave as with \voiceOne and rests
> > behave as with \oneVoice?
> 
> I think using
> 
> \override Rest.voiced-position = 0
> 
> in the voice in which you have rests might do the trick for you.
> 
> Trevor

This shows that I should read my emails in the correct order. Thanks
for the tip about voiced-position. This seems to be a new feature in
2.19? 

Unlike staff-position, voiced-position does the right thing for all
rests, including r1 and R1. 

Adding that to my previous example:

%----------------------------------------
\version "2.19.25"

<<
  \compressFullBarRests
  \new Staff {
    \oneVoice
    <>^"default for oneVoice"
    | r\longa | r\breve | r1 | r2 r4 r8 r8 | R1*4 | R1*2 | R1 |
  }
  \new Staff {
    \voiceOne
    <>^"default for voiceOne"
    | r\longa | r\breve | r1 | r2 r4 r8 r8 | R1*4 | R1*2 | R1 |
  }
  \new Staff {
    \voiceOne   
    \override Rest.staff-position = #0
    \override MultiMeasureRest.staff-position = #0
    <>^"voiceOne with staff-position = 0"
    | r\longa | r\breve | r1 | r2 r4 r8 r8 | R1*4 | R1*2 | R1 |
    \revert Rest.staff-position
    \revert MultiMeasureRest.staff-position
  }
  \new Staff {
    \voiceOne   
    \override Rest.Y-offset = #0
    \override MultiMeasureRest.Y-offset = #0
    <>^"voiceOne with Y-offset = 0"
    | r\longa | r\breve | r1 | r2 r4 r8 r8 | R1*4 | R1*2 | R1 |
    \revert Rest.Y-offset
    \revert MultiMeasureRest.Y-offset
  }
  \new Staff {
    \voiceOne   
    \override Rest.voiced-position = #0
    \override MultiMeasureRest.voiced-position = #0
    <>^"voiceOne with voiced-position = 0"
    | r\longa | r\breve | r1 | r2 r4 r8 r8 | R1*4 | R1*2 | R1 |
    \revert Rest.voiced-position
    \revert MultiMeasureRest.voiced-position
  }
>>
%----------------------------------------

(see attached rests8b.pdf for the output). The fact that
voiced-position works correctly and staff-position doesn't seems to
further underscore the problem with (and possible bug in)
MultiMeasureRest.staff-position.

-- Peter