Re: Centering markup between staves

[Simon Albrecht]

Hello Robert,

On 25.09.2015 01:17, Robert Clausecker wrote:
> Hello all!
>
> I'm currently trying to transcribe an organ score [1] which notes register
> changes between the two staves for the left and right hand. For æsthetic
> reasons, these annotations should be vertically centred precisely between
> the two staves.

Here’s a really nice version which uses the Stanza_number_engraver 
(normally used in Lyrics contexts) to place the clavier indication 
before the moment for which it applies. Besides, this fortunately 
ensures perfect alignment with the dynamic following.
Also, the \general-align markup command helped simplify the code.

%%%%%%%%%%%%%%%
\version "2.19.27"
regR = \markup \general-align #Y #0 {
  \normal-text { R }
  \override #'(font-encoding . fetaBraces) \lookup #"brace60"
}

\score {
  \new PianoStaff <<
    \new Staff \relative c' {
      c4 d e f |
      g a b c |
    }
    \new Dynamics \with {
      \override DynamicText.self-alignment-Y = 0
      %\override TextScript.self-alignment-Y = 0
      \consists Stanza_number_engraver
    } {
      \set stanza = \regR s1\p
    }
    \new Staff \relative c {
      c4 d e f |
      g a b c |
    }
  >>
}
%%%%%%%%%%%%%
I hope this also work in more complicated situations.

Yours, Simon