Editing Printing only odd bar numbers

To print only the odd bar numbers you must set the <code>barNumberVisibility</code>

* to a mode showing all bar numbers
* based on a calculation of the bar numbers to be visible.

Moreover, the <code>Score.BarNumber #'break-visibility</code> should be overridden e.g. to <code>#all-visible</code>

This is best placed in a <code>\layout</code> block to keep the music part &quot;clean&quot;.

The first bar number can also be printed by inserting <code>\bar &quot;&quot;</code> before the music.

<span class="small">This modulo function can also be used in a more general way!</span>

<lilypond version="2.24.0">
%% http://lsr.di.unimi.it/LSR/Item?id=712

%LSR modified/updated by P.P.Schneider on Feb 15, 2014.

\layout { 
  \context { 
    \Score 
    barNumberVisibility = #all-bar-numbers-visible 
    % this line hereunder is just to fix a v2.18.0 bug (P.P.Schneider Feb.2014)
    % (see : http://lilypond.1069038.n5.nabble.com/Bar-number-on-odd-bars-does-not-work-on-new-release-td157263.html)
    barNumberVisibility = #(lambda (n x) (= (modulo n 2) 1)) 
    % for higher version use :
    %barNumberVisibility = #(modulo-bar-number-visible 2 1) % or 2 0 to see the even bar numbers 
    \override BarNumber.break-visibility = #all-visible 
  } 
} 

\new Staff { 
  \bar ""
  \repeat unfold 8 { c'2 c' } 
}
</lilypond>

[[Category:Staff notation]]