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Re: NR 1.2.3 Upbeats: confusing explanation of measurePosition
From: |
Colin Hall |
Subject: |
Re: NR 1.2.3 Upbeats: confusing explanation of measurePosition |
Date: |
Mon, 31 Dec 2012 11:55:50 +0000 |
User-agent: |
Mutt/1.5.21 (2010-09-15) |
On Mon, Dec 31, 2012 at 10:20:38AM +0100, Federico Bruni wrote:
> Il 31/12/2012 00:52, Reinhold Kainhofer ha scritto:
> >On 2012-12-30 23:59, Federico Bruni wrote:
> >>In NR 1.2.3, Upbeats:
> >>
> >>"""
> >>So \partial 8 becomes:
> >>
> >>\time 3/4
> >>\set Timing.measurePosition = #(ly:make-moment -1 8)
> >>e8 | a4 c8 b c4 |
> >>
> >>_The property measurePosition contains a rational number indicating how
> >>much of the measure has passed at this point_. Note that this is set to
> >>a negative number by the \partial command: i.e., \partial 4 is
> >>internally translated to -4, meaning “there is a quarter note left in
> >>the measure.”
> >>"""
> >>
> >>
> >>IMO the first sentence is a bit confusing.
> >
> >I agree about confusion, but not in the first sentence, but in the last:
> >-4 actually means "it needs one quarter note until the measure even
> >starts". (\partial inserts a partial measure 0 before the measure 1, and
> >measure 1 is the first measure where counting starts)
> >
>
> Ok, I would say "it needs one quarter note until the _first_ measure
> starts" and explain that using a non-negative number would result in
> setting the partial measure as measure 1 instead of measure 0.
Thanks for the report, Federico, and to the others for their analysis.
Could you collate a well-formed doc enhancement request and post it?
Then I can create a tracker for the change.
Cheers,
Colin.
--
Colin Hall
Bug Squad