ALEXANDRE FICAGNA wrote Wednesday, June 13, 2012 2:57 PM
>I still didn't picture exactly how \inverse works in its from-pitch
> to-pitch variables, but I tried an example and what I got is the
> correct inversion of pitches, but each one was an octave above.
>
> Here's the code:
>
> \version "2.14.2"
>
> #(set-global-staff-size 15)
>
> \paper {
> #(define dump-extents #t)
> ragged-right = ##t
> line-width = 17\cm
> }
>
> melody= { a8 gis ees d g4 }
>
> \score {
> \new PianoStaff
> <<
> \new Staff \relative c' {
> %\override Stem #'transparent = ##t %uncomment to hide Stems
> %\override Beam #'transparent = ##t %uncomment to hide Beams
> \melody \retrograde \melody
> }
> \new Staff \relative c {
> \clef treble
> %\override Stem #'transparent = ##t %uncomment to hide Stems
> %\override Beam #'transparent = ##t %uncomment to hide Beams
> \inversion a' a \melody
> \retrograde \inversion a' a \melody
> }
>>>
> \layout {
> indent = #0
> \context {
> \Staff
> \remove "Bar_number_engraver"
> \remove "Time_signature_engraver"
> }
> }
> }
If you use \relative for melody, \inversion behaves more as you
would expect. Either there is a bug which causes the incorrect
behaviour you see when given absolute notes or the documentation
needs to explain this better. Note though that \inversion will
also transpose if from-pitch and to-pitch differ.
Copied to bug list for further discussion.
Trevor
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