8.4.3 Proportional notation

Notes can be spaced proportionally to their time-difference by assigning a duration to proportionalNotationDuration

     
     <<
       \set Score.proportionalNotationDuration = #(ly:make-moment 1 16)
       \new Staff { c8[ c c c c c]  c4 c2 r2 }
       \new Staff { c2  \times 2/3 { c8 c c } c4 c1 }
     >>

Setting this property only affects the ideal spacing between consecutive notes. For true proportional notation, the following settings are also required.

• True proportional notation requires that symbols are allowed to overstrike each other. That is achieved by removing the Separating_line_group_engraver from Staff context.
• Spacing influence of prefatory matter (clefs, bar lines, etc.) is removed by setting the strict-note-spacing property to #t in SpacingSpanner grob.
• Optical spacing tweaks are switched by setting uniform-stretching in SpacingSpanner to true.

See also

input/regression/spacing-proportional/.ly input/regression/spacing-strict-notespacing/.ly input/regression/spacing-strict-spacing-grace/.ly

An example of strict proportional notation is in the example file input/proportional.ly.