RE: adding to context voice conflicts with instrumentname

[Trevor Daniels]

Hi Simon

Your problem is using {..} after \new Staff instead of
<<..>>.  I'm not sure I fully understand why, nor do
I have 2.10 available to check, but I think what happens
is that the first Voice="V" is placed in the first staff,
but too late for the second Voice="V", which has already
created a new default staff for itself.  Maybe Mats can
iluminate further.

Anyway, it is always a good idea to use angle brackets
after \new Staff just to avoid this kind of problem.

I think this works OK:

\score { 
  <<
    \new Staff <<
      \set Staff.instrumentName = "name"
      \new Voice = "V" { d'2 e' f' g' f' e' d'1 }
    >>
% other Staves and Voices go here
    \context Voice = "V" { s2 \hideNotes s1 \unHideNotes }
  >>
}

An alternative method which might be better is to define
your hidenotes with spacers in a variable which is then
included in parallel with the real music.  But the variable
definition has to go before the \score, like this:

hideControl = { s2 \hideNotes s1 \unHideNotes }
\score {
  <<
    \new Staff <<
      \set Staff.instrumentName = "name"
      \new Voice = "V" <<
         { d'2 e' f' g' f' e' d'1 }
         \hideControl
      >>
    >>
% other Staves and Voices go here
  >>
}

Trevor D

> -----Original Message-----
> From: address@hidden
> [mailto:lilypond-user-bounces+t.daniels=treda.co.u
> address@hidden Behalf Of
> Simon Van Damme
> Sent: 28 January 2008 13:17
> To: address@hidden
> Subject: adding to context voice conflicts with 
> instrumentname
> 
> 
> Dear all
> 
> By means of the (simplified) code below, I wish 
> to hide some part of the 
> original music using "\context Voice = ...". It 
> is important that the 
> original notes and the hide/unhide specifications 
> remain separated 
> (ideally they come at the end of the score-block)
> 
> Problem: this stops working when I add an 
> instrumentname to the original 
> data. Suddenly, the additions go in a separate 
> Staff. Does anyone knows 
> where this conflict arises, so that I can sort it out?
> 
> Many thanks
> 
> Simon
> Musicology Department
> K.U.Leuven (Belgium)
> 
> --- CODE ---
> 
> \version "2.10.33"
> \score { <<
>     \new Staff {
>     \set Staff.instrumentName = "name"    % 
> OMITTING THIS LINE ...
>         \new Voice = "V" { d'2 e' f' g' f' e' d'1 }
>     }
> % other Staves and Voices go here
>     \context Voice = "V" { s2 \hideNotes s1 
> \unHideNotes }    % ... 
> MAKES THIS LINE WORK PROPERLY
>  >> }
> 
> Disclaimer: 
http://www.kuleuven.be/cwis/email_disclaimer.htm



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