merge_midi_frames: Merge dataframes transformed back to long format

In urswilke/pyramidi: Generate and Manipulate Midi Data in R Data Frames

Merge dataframes transformed back to long format

Description

Merge dataframes transformed back to long format, remove added columns and transform to the right chronological order in order to replace the original midi_frame_unnested object.

Usage

merge_midi_frames(df_meta, df_notes_long, df_not_notes)

Arguments

df_meta, df_notes_long, df_not_notes

Dataframes in the format of split_midi_frame().

Value

Merges the input dataframes, arranges by i_track & (absolute) ticks, and calculates time (in relative ticks since the last event).

See Also

Other Split/merge meta/notes/non-note events: split_midi_frame()

Examples

## Not run: 
midi_file_string <- system.file("extdata", "test_midi_file.mid", package = "pyramidi")
mf <- miditapyr$MidiFrames(midi_file_string)

dfm <- tab_measures(mf$midi_frame_unnested$df, ticks_per_beat = mf$midi_file$ticks_per_beat)

l <- split_midi_frame(dfm)

df_notes_long <- pivot_long_notes(l$df_notes_wide)

merge_midi_frames(l$df_meta, df_notes_long, l$df_not_notes)

## End(Not run)

urswilke/pyramidi documentation built on March 7, 2024, 3:48 p.m.