pitchtools.get_signed_interval_series — Abjad v1.1.1 documentation

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# pitchtools.get_signed_interval_series

`abjad.tools.pitchtools.` `get_signed_interval_series`(pitch_carriers, wrap=False)

  Return list of signed integers representing the intervals between each of the elements in pitch_carriers.

  Behavior of `wrap`:

  - When `wrap = False` do not return `pitch_carriers[-1] - pitch_carriers[0]` as last in series.
  - When `wrap = True` do return `pitch_carriers[-1] - pitch_carriers[0]` as last in series.
  - Default to `False`.

      abjad> staff = Staff(construct.scale(8))
      abjad> print staff.format
      \new Staff {
              c'8
              d'8
              e'8
              f'8
              g'8
              a'8
              b'8
              c''8
      }

      abjad> pitchtools.get_signed_interval_series(t)
      [2, 2, 1, 2, 2, 2, 1]

      abjad> pitchtools.get_signed_interval_series(t, wrap = True)
      [2, 2, 1, 2, 2, 2, 1, -12]

      abjad> notes = construct.scale(8)
      abjad> notes.reverse( )
      abjad> notes
      [Note(c'', 8), Note(b', 8), Note(a', 8), Note(g', 8), Note(f', 8), Note(e', 8), Note(d', 8), Note(c', 8)]

      abjad> pitchtools.get_signed_interval_series(notes)
      [-1, -2, -2, -2, -1, -2, -2]

      abjad> pitchtools.get_signed_interval_series(notes, wrap = True)
      [-1, -2, -2, -2, -1, -2, -2, 12]

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