Re: Disable extra space around StaffGroup?

[Nathan Sprangers]

Hi Torsten,

Thank you, that makes so much sense now. I was definitely struggling to understand how the various spacing settings work together, especially between VerticalAxisGroup and StaffGrouper.

Thanks,

Nathan

On Wed, Feb 21, 2018 at 5:49 AM, Torsten Hämmerle <address@hidden> wrote:

Nathan Sprangers wrote
> If it helps, my interest is in creating band scores, which usually place
> an
> extra bracket or brace around certain families (such as the clarinets,
> cornets, etc in Holst's First Suite for Military Band
> &lt;http://imslp.org/wiki/First_Suite_for_Military_Band,_Op.28_No.1_(Holst,_Gustav)&gt;),
> but there is typically no extra space around these staff groups.


Hi Nathan,

Concerning the spacing "around" staff-groups:
By default, LilyPond tries to keep staff-groups closer together in general.
When stretching has to be applied this becomes particularly obvious.

As in Holst's example (Military Band, i.e. Wind Band), it is common to have
uniform vertical spacing just ignoring groups or sub-groups.

This can be achieved fairly easy:
By setting VerticalAxisGroup.staff-staff-spacing of \Staff (a single
stand-alone stave, the lowest level in grouping hierarchy) to the values
found in the staff-grouper (in my example, I've used the default values).

\layout {
  \context {
    \Staff
    \override VerticalAxisGroup.staff-staff-spacing =
      #'((bavsic-distance . 9)
        (minimum-distance . 7)
        (padding . 1)
        (stretchability . 5))
  }
}

If set, these values will be automatically used even within different groups
in the hierarchy.
Background: VerticalAxisGroup.staff-staff-spacing is *not* specified by
default and do by default, the spacing values will be "inherited" depending
on the level of hierarchy.


To demonstrate this, I've chosen a very small global-staff-size and
deliberately forced stretching. Using Acrobat Reader's measuring feature,
I've marked the gaps between the staves (see attached PDF).

*Default vertical spacing* - vertical spacing between groups differs
depending on grouping level.
test-uniform-vertical-spacing-default.pdf
<http://lilypond.1069038.n5.nabble.com/file/t3887/test-uniform-vertical-spacing-default.pdf>

*Uniform vertical spacing* by explicitly setting
Staff.VerticalAxisGroup.staff-staff-spacing
test-uniform-vertical-spacing-proof.pdf
<http://lilypond.1069038.n5.nabble.com/file/t3887/test-uniform-vertical-spacing-proof.pdf>

In the second example, applying the layout changes just on in the \Staff
context, there is absolutely the same vertical distance between all staves,
ignoring any grouping.

Cheerio,
Torsten






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