def is_pitch_class_unique(self):
"""
Is true when pitch set is pitch-class-unique.
.. container:: example
>>> set_ = abjad.PitchSet(
... items=[-2, -1.5, 6, 7, -1.5, 7],
... item_class=abjad.NumberedPitch,
... )
>>> set_.is_pitch_class_unique
True
.. container:: example
>>> set_ = abjad.PitchSet(
... items=[-2, -1.5, 6, 7, 10.5, 7],
... item_class=abjad.NumberedPitch,
... )
>>> set_.is_pitch_class_unique
False
Returns true or false.
"""
import abjad
numbered_pitch_class_set = abjad.PitchClassSet(
self, item_class=abjad.NumberedPitchClass)
return len(self) == len(numbered_pitch_class_set)
def duplicate_pitch_classes(self):
"""
Gets duplicate pitch-classes in pitch set.
.. container:: example
>>> set_ = abjad.PitchSet(
... items=[-2, -1.5, 6, 7, -1.5, 7],
... item_class=abjad.NumberedPitch,
... )
>>> set_.duplicate_pitch_classes
PitchClassSet([])
>>> set_ = abjad.PitchSet(
... items=[-2, -1.5, 6, 7, 10.5, 7],
... item_class=abjad.NumberedPitch,
... )
>>> set_.duplicate_pitch_classes
PitchClassSet([10.5])
Returns pitch-class set.
"""
import abjad
pitch_classes = []
duplicate_pitch_classes = []
for pitch in self:
pitch_class = abjad.NumberedPitchClass(pitch)
if pitch_class in pitch_classes:
duplicate_pitch_classes.append(pitch_class)
pitch_classes.append(pitch_class)
return abjad.PitchClassSet(duplicate_pitch_classes,
item_class=abjad.NumberedPitchClass)
def is_link_chord(ais):
for sextuple in abjad.sequence(ais).nwise(n=6):
pc_set = abjad.PitchClassSet(sextuple)
try:
set_class = abjad.SetClass.from_pitch_class_set(pc_set)
if set_class.rank == 17:
return True
except KeyError as e:
print(e)
return False