Re: Automatic beaming

[Trevor Daniels]

Helge Kruse wrote Sunday, April 05, 2009 7:22 AM
> I write a piece with where are a lot of triplets in one variation. 
> It
> looks nice to have the beaming in the same length as the triplets 
> as it
> is done in the hand writing original.
>
> I found in the manual (1.2.4 Beams) that I can manually set 
> beaming. But
> since the piece has a regulare structure (almost only triples), I 
> wanted
> to use automatic beaming. Unfortunately I did get i working. I 
> attach
> the samples in one file (tuplet.ly) with some samples. The 
> handwritten
> original score is placed here: http://dj1na.gmxhome.de/pg-0009.JPG
>
>
> Sample:1 got from the manual works, shows the use of beatGrouping.
>
> Sample:2 I modified it using beatLength, shows that automatic 
> beaming
> works with triplets.
>
> Sample:3 This is an excerpt of the "real score", but using manual
> beaming. The object is to setup automatic beaming, that it 
> produces the
> same output.
>
> Sample:4 My Playground, where no combination of beatLength and
> beatGrouping gave any acceptible result.
>
>
> Can you tell we, what must I do to fix this?

Setting beatLength to 1/8 will work fine, but you
must revert all the beam-ending rules for that time
signature and beam duration which are set in auto-beam.scm,
otherwise setting beatLength will not work.  There
is no need to use beatGrouping here.

In your example the required revert command is

#(revert-auto-beam-setting '(end * * 2 4) 1 4 'Staff)

This can be reverted in Voice, Staff or Score contexts.
If you use 32nd beams there are also two more rules
to revert.

You can read about this in section 1.2.4 in the Notation
Reference under Setting sutomatic beam behaviour.

> Best Regards,
> Helge

Trevor