Re: Incorrect bar numbers

[Reinhold Kainhofer]

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Am Sonntag, 23. August 2009 17:46:39 schrieb Remco Poelstra:
> Hi,
>
> In the linked files, the bar numbered 118 is not 118, but 117. In this
> piece there is only an offset of 1, but I've created files where the
> offset could become larger. Bar 106 is numbered correct.
> The offending baris on the last line of music.

Hehe, yeah, that's a nice pitfall! To track down the problem (i.e. the exact 
measure), it helps a lot to add \barNumberCheck #... every now and then (I use 
it every 10 measures). This also helps locating the correct position in the 
code when proof-reading the score.

Plus, what you can do is to temporarily print bar numbers for each measure:
\layout {
  \context {
    \Score
    \override BarNumber #'break-visibility = #end-of-line-invisible
    barNumberVisibility = #(every-nth-bar-number-visible 1)
  }
}

You'll then see that the problem lies in measure 115. now let's look at the 
code of this measure:

R2.*2 |
bes,_"cresc." |  %<= this is the problematic measure 115

You have a rest, which lasts 2 x 2., i.e. two whole measures. You don't give a 
new duration for the bes, so the bes, also lasts two whole measures (it looks 
like a dotted half, but is scaled to twice the duration).
Effectively, your code is the same as:

R2.*2 |
bes,2.*2_"cresc." | 

Which is not what you want!
So, remember to add explicit durations after multi-measure rests!

Cheers,
Reinhold
- -- 
- ------------------------------------------------------------------
Reinhold Kainhofer, address@hidden, http://reinhold.kainhofer.com/
 * Financial & Actuarial Math., Vienna Univ. of Technology, Austria
 * http://www.fam.tuwien.ac.at/, DVR: 0005886
 * LilyPond, Music typesetting, http://www.lilypond.org
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