[MEI-L] <measure> questions: barline splitting a measure

[Byrd, Donald A.]

I have no particular opinion on Craig's first question, but w/r/t the 
second, this is exactly why I like the idea of _pseudobarlines_; people 
might recall my mentioning them in Charlottesville. The Byrd & Isaacson 
music-representation specification paper (in the Uva Collab resources) 
defines a pseudobarline as "A symbol that looks like a barline but does 
not function as a measure delimiter. Such symbols include mid-measure 
double barlines, repeat bars, and dotted barlines. The distinction is 
important for, at a minimum, understanding rhythm and numbering 
measures." My Nightingale score editor has pseudobarlines as well as 
"real" barlines, and they've turned out to be very useful.

--Don


On Tue, 11 Aug 2009 14:28:13 -0700, Craig Sapp <craigsapp at gmail.com> wrote:
> Hi Perry,
>
> For a <measure> object, there is a "complete" attribute,
> described in the DTD 1.9b:
>   "The complete attribute allows the encoding of whether
>     the measure preceding this barline matches the
>     prevailing meter: a value of 'c' indicates a metrically
>     complete measure, 'i' indicates a measure with not
>     enough beats, while 'o' is for measures with too many
>     beats."
>
> Would it be interesting to store in a <measure> attribute
> the duration of the measure, particularly when complete="i"
> or complete="o" is given?
>
> A related question is: how do I indicate that a barline is actually
> splitting a measure in half (due to a repeat-barline)?  I presume
> it is best to store each half-bar in separate <measure> elements
> (since otherwise they would overlap <section> elements), but
> I would like to indicate that these two <measure> containers
> are intended to make a single logical measure within the
> time signature.  Using only complete="i" for both half-measure
> is ambiguous with a sequence of two complete measures
> which happen to be underfull.
>
> -=+Craig
>
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--
Donald Byrd
Senior Scientist
Adjunct Associate Professor of Informatics & Music
Indiana University, Bloomington