Re: a list of manually fine-tuned beaming exceptions?

[Trevor Daniels]

Janek Warchoł wrote Saturday, March 05, 2011 12:05 PM

> while i'd love to improve beaming algorithm itself so that it 
> would
> produce perfect beams on its own, it's a task way beyond my 
> current
> skills. Still some wrong beams bother me very much, for example 
> this
> one
>  \relative c'' { b8[ a16 g] }
> it's really too high, and the secondary beam doesn't cover the
> staffline despite being able to easily do so.
> Compare it to \relative
> c'' { g8[ f16 e] } - this one is more difficult (more stafflines 
> to
> take care of), but executed better.

When I suggested investigating the automatic beaming I didn't
mean messing with the code.  But there are a number of parameters
in the #'details property of beam which might be worth exploring.
For example, the default value of stem-length-demerit-factor is
5.  Setting this to 10 lowers the beam of the first example above by
a staff space.  Setting it to 20 lowers it by 2 ss.  Neither of 
these
settings changes the beam position in the second of your examples.

But I've not investigated any others.

Trevor