Re: tupletSpannerDuration

[David Kastrup]

"Mark Stephen Mrotek" <address@hidden> writes:

>> On 19/01/13 18:04, Mark Stephen Mrotek wrote:
>>
>>     Hello:
>>
>>         From the manual:
>>
>>         \relative c' {
>>
>>         \time 2/4
>>
>>         \set tupletSpannerDuration = #(ly:make-moment 1 4)
>>
>>         \times 2/3 { c8 c c c c c }
>>
>>         }
>>
>>         I understand everything except how the “1” and “4” relate to
>>     the notation.
>>
>> Have a look at the section of the documentation on time administration
>> (http://lilypond.org/doc/v2.17/Documentation/notation/special-rhythmic-
>> concerns#time-administration): "ly:make-moment n m constructs a
>> duration of n/m of a whole note. For example, ly:make-moment 1 8 is an
>> eighth note duration and ly:make-moment 7 16 is the duration of seven
>> sixteenths notes."

> Please check my understanding. The “1” and the “4” refer to a quarter
> note, the span over which the command “\times 2/3” acts. Therefore, in
> the example (attached) the tuplets are in the span of a quarter note.
> If I had wanted the tuplets over the spam of a 16th note, I would use
> “1” and “16.” Am I correct?

Sounds like it.  Once issue 3095
<URL:http://code.google.com/p/lilypond/issues/detail?id=3095> passes,
you can write

\tuplet 3/2 4 { c8 c c c c c }

and that hopefully needs less of an explanation.  Of course, that
explanation still needs to be done (there is no user-level documentation
yet short of the music function appendix), but it will hopefully be more
obvious.

-- 
David Kastrup