Le mardi 28 mars 2023 à 21:40 +0100, John Whitmore a écrit :
> I'm not even sure that I have the correct terminology for why I'm trying to
> achieve. I've been trying to find info in the bar sections but so far haven't
> found what I'm looking for.
>
> I'm trying to write out a tune whose first bar is incomplete, whilst the
> piece is in 4/4 the first bar only contains a triplet:
>
> \tuplet 3/2 { a'8 b' cs'' } |
>
> There are no rests in the bar it's just that triplet, which would be
> equivalent to a 1/4 note, I think. So that bar is only a quarter the length
> that it should be for the bar check.
>
> The last bar of the piece is the mirror of that first bar and is only 3/4
> full:
>
> fs''8 g'' fs'' e'' d''8 r8 |
>
> Unfortunately the above will fail the first bar check and then rearrange all
> the bars to move the bar breaks making that first bar a complete bar.
>
> I've tried to remove all the bar checks from the piece and manually add the
> bars with '\bar "|"' But that gives me my manual bars plus where lilypond
> thinks the bars should go.
>
> \tuplet 3/2 { a'8 b' cs'' } \bar "|"
> d''4 fs''8 d'' g'' e'' fs'' e'' \bar "|"
>
>
> I end up with alternating bars which are 1/4 full and 3/4 full the whole way
> through the piece.
>
> Probably missed the section of the manual which I need for this. Any
> direction would be gratefully received.This one from the Learning Manual: [Partial measure](https://lilypond.org/doc/v2.24/Documentation/learning/advanced-rhythmic-commands.html#partial-measure), and this one from the Notation Reference: [Upbeats](https://lilypond.org/doc/v2.24/Documentation/notation/displaying-rhythms.html#upbeats) At the beginning of the piece, use `\partial 4`. At the end, just don't put a bar check.
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