Re: Forcing display of a time signature

[Thomas Morley]

Am Mi., 21. Juli 2021 um 12:07 Uhr schrieb N. Andrew Walsh
<n.andrew.walsh@gmail.com>:
>
> Hi List,
>
> I have the following:
>
> %%%%
> \version "2.20.0"
>
> textStencil =
> #(define-music-function
>    (grob text)
>    (key-list? markup?)
>    #{ \override #grob . stencil = #ly:text-interface::print
>       \override #grob . text = #text #})
>
> timeStencil = \textStencil Staff.TimeSignature \etc
>
> {
>    \once \timeStencil \markup \compound-meter #'(0 0)
>    \time 3/2
>    | a'2 b'4. a'8 g'4 g'
>    \time 5/4
>    | a'4 b'4. c''8 b' a' b'4
>    \time 6/8
>    | a'8 g' fis' gis'4. \bar "|."
> }
> %%%%
>
> Let us say that I want to have several measures with the "0/0" time 
> signature, while other instruments are playing in metered 3/2. At some point, 
> I want to return the unmetered voice to the metered 3/2 the rest are playing, 
> and thus want to display the time signature at that point *for that 
> instrument only*. Is there a way to force (re-)displaying a time signature in 
> one Staff, without invoking the \time command and displaying it for all 
> voices?
>
> Thanks for the help,
>
> A

How about:

<<
    \new Staff { \time 3/4 b'4 4 4  2. }
    \new Staff { b'8 8 2 \set Staff.timeSignatureFraction = #'(3 . 4) 2. }
    \new Staff { b'4. 8 r4 2. }
>>

Cheers,
  Harm