Re: Question re: scheme, \transpose function

[William Rehwinkel]

Dear Yoshi,

Actually, I think the procedure is working correctly, but using the 
\transpose function within a \relative is causing some weird output. For 
example, the file

% --------
\version "2.25.18"
\relative c' {
  c16 <c \transpose c f c>
  c16 <c \transpose c f b>
}
% --------

does not result in the output that I was expecting. Maybe someone else 
can say why this is, but I'll investigate more later.

-William


On 9/13/24 10:48, Yoshiaki Onishi wrote:
> Dear LilyPond Community,
>
> In the interest of learning more about Scheme as used in LilyPond (and 
> learning LilyPond in general!), I am currently in the process of making 
> a shortcut function that handles the artificial harmonic notation of 
> string instruments instead of typing "<note note \harmonic >"However, 
> something must be wrong with the way I am handling \transpose in the 
> scheme code, and there are some instances of the artificial harmonics 
> that don't render correctly. Code (as tiny as I could manage!) and 
> screenshot attached. I'd be grateful in advance if anyone could 
> enlighten me on this.
>
> (Context: I am/was a Finale user with some coding background who 
> rediscovered the LilyPond's goodness and this is week 3 of learning it 
> together with students at the university I work. Part of me wished there 
> was a way to specify the interval of transposition by some kind of 
> interval name followed by a direction, rather than "frompitch 
> topitch"...but I know this has some intricacies with absolute vs 
> relative pitch notation...)
>
> Thanks in advance!
> Yoshi
>
> =====
>
> \version "2.24.4"
> % I tried to use (make-relative) macro to see if it helped with 
> anything, but to no avail.
> hf = #(define-music-function (note1) (ly:music?)
>          #{ < #note1 \transpose c f $note1 \harmonic > #}
>          )
> {
>    \time 3/4
>    \relative c'
>    {c'16 \hf b \hf bes \hf a \hf as \hf g \hf fis \hf f \hf e \hf es \hf 
> d \hf des | \hf c \hf b }
> }
>
> image.png

--
William Rehwinkel (any pronouns)
Juilliard School '26 - Oberlin Conservatory '24
william@williamrehwinkel.net - https://williamrehwinkel.net
PGP Public Key: https://ftp.williamrehwinkel.net/pubkey.txt

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