Re: “SubdivideBeams” problem

[Knute Snortum]

Hi Carl.  I hear what you're saying about taking control of the beams,
but I suspect that the underlying problem that the OP has gotten off
rhythm and therefore the bars don't come out right and therefore
beaming doesn't work.  There is a very suspect bar 13 that I think is
incorrect, but I can't tell without the original score.  Dividing the
measures with bars with a bar line check will make these problems pop
out.

--
Knute Snortum


On Sun, Oct 31, 2021 at 3:27 PM Carl Sorensen <c_sorensen@byu.edu> wrote:
>
>
>
> On 10/31/21, 3:42 PM, "lilypond-user on behalf of Knute Snortum" 
> <lilypond-user-bounces+carl.d.sorensen=gmail.com@gnu.org on behalf of 
> ksnortum@gmail.com> wrote:
>
>     When you see this:
>
>         (\break)
>
>     something is wrong.  You can't attach a slur to a break; it has to be
>     on some sort of note.  Also, do yourself a favor and use bar line
>     checks, one line per measure.  I have a feeling you're getting off
>     somewhere in the piece and that will clear up your beaming problem.
>
> While these suggestions are good suggestions, it's also important to note 
> that beam subdivision is incorrect in many instances.
>
> See https://sourceforge.net/p/testlilyissues/issues/5547/
>
> If automatic subdivision is not working in your use case, and one wants  to 
> fix the problems with subdivision right now it is somewhat painful. It 
> requires overrides that describe the number of beams on each side of the 
> stem.  IIRC, it is the Stem.beaming property, which has two lists, the first 
> saying which beams are on the left side of the stem, and the second saying 
> which beams are on the right side of the stem.
>
> Here's a sample:
>
>
> %%%
> \version "2.22"
> {
>   c'32
>   \once \override Stem.beaming = #'((0 1 2) . (0  1))
>  c'
>   \once \override Stem.beaming = #'((0 1) . (0 1 2))
>   c'
>   \once \override Stem.beaming = #'((0 1 2) . (0))
>   c'
>   \once \override Stem.beaming = #'((0) . (0 1 2))
>   c'
>   c'
>   c'
>   c'
> }
> %%%%
>
> Notice that you must override the stem before and after the place you want 
> the subdivision to occur.
>
>
>
>
> Thanks,
>
> Carl
>
>
>
>