Re: Removing empty systems/groups

[Alex Voice]

>Date: Tue, 9 Oct 2012 04:29:00 -0700 (PDT)
>From: Eluze <address@hidden>
>To: address@hidden
>Subject: Re: Removing empty systems/groups
>Message-ID: <address@hidden>
>Content-Type: text/plain; charset=UTF-8
>
>Alex Voice wrote
>> Hi Lilypond Experts,
>> 
>> In a small orchestral score that incorporates an intermittent
>>chorale-like
>> string quartet, I'd like to have all staves showing at the start (I
>>think
>> I've worked that bit out), but thereafter remove the quartet StaffGroup
>> From the score unless one or more of the parts of the quartet is
>>playing, in
>> which case I would like to see all four parts of the quartet (even if
>> Their staves are empty) just for ease of following.
>
>I think this is handled by the  /Keep_alive_together_engraver/
>
>in your example, add:
>\layout {
>  \context {
>    \GrandStaff
>    \consists Keep_alive_together_engraver
>} }
>
>hth
>Eluze

Many, many thanks - it does indeed work perfectly.