A function (in development!) that writes a file to be processed by LilyPond by extracting the relevant information (e.g. pitch, length, ...) from columns of a data frame. The music notation software LilyPond can “transcribe” such an input file into sheet music.
lilyinput(X, file = "Rsong.ly", Major = TRUE, key = "c",
clef = c("treble", "bass", "alto", "tenor"), time = "4/4",
endbar = TRUE, midi = TRUE, tempo = "2 = 60",
textheight = 220, linewidth = 150, indent = 0, fontsize = 14)A data frame containing 4 named components (columns):
note: Integer - the notes' pitch in halftones from diapason (a),
i.e. 0 for diapason a, 3 for c', ...
duration: Integer - denominator of lengths of the notes, e.g. 8 for a quaver.
punctate: Logical - whether to punctate a note.
slur: Logical - TRUE indicates to start a slur, or to end it.
That means that the first, third, ... occurences of TRUE start slurps,
while the second, fourth, ... occurences end slurps.
Note that it is only possible to draw one slur at a time.
The file to be written for LilyPond's input.
Logical indicating major key (if TRUE) or minor key.
Keynote, necessary to set sharps/flats.
Integer indicating the kind of clef, supported are "treble" (default),
"bass", "alto", and "tenor".
Character indicating which meter to use, examples are: "3/4", "4/4".
Logical indicating whether to set an ending bar at the end of the sheet music.
Logical indicating whether Midi output (by LilyPond) is desirable.
Character specifying the tempo to be used for the Midi file if midi = TRUE.
The default, "2 = 60" indicates: 60 half notes per minute, whereas "4 = 90"
indicates 90 quarters per minute.
Textheight of the sheet music to be written by LilyPond.
Linewidth of the sheet music to be written by LilyPond.
Indentation of the sheet music to be written by LilyPond.
Fontsize of the sheet music to be written by LilyPond.
Nothing is returned, but a file is written.
Details will be given when development has reached a stable stage ...!
The LilyPond development team (2005): LilyPond - The music typesetter. http://www.lilypond.org/, Version 2.7.20.
Preu<df>er, A., Ligges, U. und Weihs, C. (2002): Ein R Exportfilter f<U+32824873> Notations- und Midi-Programm LilyPond. Arbeitsbericht 35. Fachbereich Statistik, Universit<e4>t Dortmund. (german)
quantMerge prepares the data to be written into the LilyPond format;
quantize and quantplot generate another kind of plot;
and exhaustive example is given in tuneR.