RE: tupletSpannerDuration

[Mark Stephen Mrotek]

Mr. Kastrup:

Thank you.

Mark

-----Original Message-----
From: address@hidden [mailto:address@hidden On Behalf Of David Kastrup
Sent: Saturday, January 19, 2013 10:39 AM
To: address@hidden
Subject: Re: tupletSpannerDuration

"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-rhythmi
>> c-
>> 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


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