Re: Help with understanding Beam properties

[Urs Liska]

Is it possible to use Beam.skip-quanting, but only when no beam touches the staff symbol?

I have found a setting that seems to give pretty good results with

    \override Stem.details.beamed-minimum-free-lengths = #'(2 2.5 2.5)
    \override Beam.damping = 10

However, by default that can produce oversize stems outside the staff:

Using \override Beam.skip-quanting = ##t on top of that gives a different result:

The first beam (with shorter stems)  is definitely more to my liking in the second rendering while the last one should really have been quantized so not to interfere like that with the staff symbol.

I have not seen anything that makes me think of an skip-quanting-if-outside-staff. Would I have to use a callback (which?) where I can set skip-quanting depending on the currently set Stem.length? Of course I don't want to calculate Stem.length myself because that would mean I'd do that part of the layout on my own ;-)

Best
Urs

Am 19.03.19 um 15:22 schrieb Urs Liska:

Hi all,

in a project with 600+ short scores (mostly single systems) I have an issue with the beam/stem formatting, in so far as the stems tend to be too short when multiple beams are present (at least that's what the commissioners complained about). When looking at the documentation of Beam I am (as usual) intimidated by the relation of presumably powerful properties (especially the #'details) to the utter uselessness of the docstrings.

Could someone please point me to useful examples or explain to me in plain and sufficiently verbose language what the following Beam.details properties do (with about what value ranges)? I have the impression these could be very useful for my issue, but I can't imagine starting to find something by trial-and-error (it's too many properties, and I have hundreds of examples to apply them to):

• stem-length-demerit-factor
• secondary-beam-demerit
• stem-length-limit-penalty

as well as Stem.details:

• beamed-lengths
• beamed-minimum-free-lengths
• beamed-extreme-minimum-free-length
• lengths

I first tried #'beamed-lengths, but that is totally too static to serve as a global override. So I think the "demerit" properties of Beam look promising but I don't have any idea how to start with them.

Thanks
Urs

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