Clip systems

This code shows how to clip (extract) snippets from a full score.

This file needs to be run separately with -dclip-systems. Note that the output cannot be shown on this Wiki due to technical limitations. The result will be files named base-from-start-to-end[-count].eps.

If system starts and ends are included, they include extents of the System grob, e.g., instrument names.

Grace notes at the end point of the region are not included.

Regions can span multiple systems. In this case, multiple EPS files are generated.

\version "2.24"

#(set-default-paper-size "a6" 'landscape)
\layout {
  indent = 2.4\cm
}

#(ly:set-option 'clip-systems)
#(ly:set-option 'separate-page-formats 'ps)
#(define output-suffix "1")

origScore = \new Staff \with { instrumentName = "Instrument" }
\relative c' {
  c1
  d1
  \grace c16 e1
  \key d \major f1 \break

  \clef bass g,1
  fis1
}

\book {
  \score {
    \origScore
    \layout {
      % Each clip-region is a (START . END) pair
      % where both are rhythmic locations.  Syntax:
      %
      %   (make-rhythmic-locations BAR-NUMBER NUM DEN)
      %
      % means NUM/DEN whole-notes into bar numbered BAR-NUMBER

      clip-regions = #(list (cons
                             (make-rhythmic-location 2 0 1)
                             (make-rhythmic-location 4 0 1))
                            (cons
                             (make-rhythmic-location 0 0 1)
                             (make-rhythmic-location 4 0 1))
                            (cons
                             (make-rhythmic-location 0 0 1)
                             (make-rhythmic-location 6 0 1)))
    }
  }
}

#(ly:set-option 'clip-systems #f)
#(ly:set-option 'separate-page-formats #f)
#(define output-suffix #f)

\book {
  \score { \origScore }
  \markup { \bold \fontsize #6 clips }
  \score {
    \lyrics {
      "from-2.0.1-to-4.0.1-clip.eps"
      \markup \epsfile #X #30.0
                       #(format #f "~a-1-from-2.0.1-to-4.0.1-clip.eps"
                                (ly:parser-output-name))
    }
  }
}