QTargetMeasure¶

class abjadext.nauert.QTargetMeasure.QTargetMeasure(offset_in_ms=None, search_tree=None, time_signature=None, tempo=None, use_full_measure=False)¶

Q-target measure.

Represents a single measure in a measurewise quantization target.

>>> search_tree = abjadext.nauert.UnweightedSearchTree({2: None})
>>> tempo = abjad.MetronomeMark((1, 4), 60)
>>> time_signature = abjad.TimeSignature((4, 4))

>>> q_target_measure = abjadext.nauert.QTargetMeasure(
...     offset_in_ms=1000,
...     search_tree=search_tree,
...     tempo=tempo,
...     time_signature=time_signature,
...     )

>>> abjad.f(q_target_measure)
abjadext.nauert.QTargetMeasure(
    offset_in_ms=abjad.Offset(1000, 1),
    search_tree=abjadext.nauert.UnweightedSearchTree(
        definition={   2: None,
            },
        ),
    time_signature=abjad.TimeSignature((4, 4)),
    tempo=abjad.MetronomeMark(
        reference_duration=abjad.Duration(1, 4),
        units_per_minute=60,
        ),
    use_full_measure=False,
    )

QTargetMeasures group QTargetBeats:

>>> for q_target_beat in q_target_measure.beats:
...     print(q_target_beat.offset_in_ms, q_target_beat.duration_in_ms)
1000 1000
2000 1000
3000 1000
4000 1000

If use_full_measure is set, the QTargetMeasure will only ever contain a single QTargetBeat instance:

>>> another_q_target_measure = abjadext.nauert.QTargetMeasure(
...     offset_in_ms=1000,
...     search_tree=search_tree,
...     tempo=tempo,
...     time_signature=time_signature,
...     use_full_measure=True,
...     )

>>> for q_target_beat in another_q_target_measure.beats:
...     print(q_target_beat.offset_in_ms, q_target_beat.duration_in_ms)
1000 4000

Not composer-safe.

Used internally by Quantizer.

Attributes Summary

`__format__`	Formats q-event.
`beats`	Gets the tuple of `QTargetBeats` contained by the `QTargetMeasure`.
`duration_in_ms`	The duration in milliseconds of the `QTargetMeasure`:
`offset_in_ms`	The offset in milliseconds of the `QTargetMeasure`:
`search_tree`	The search tree of the `QTargetMeasure`:
`tempo`	The tempo of the `QTargetMeasure`:
`time_signature`	The time signature of the `QTargetMeasure`:
`use_full_measure`	The `use_full_measure` flag of the `QTargetMeasure`:

Special methods

__format__(format_specification='')¶

Formats q-event.

Set format_specification to ‘’ or ‘storage’. Interprets ‘’ equal to ‘storage’.

Returns string.

(AbjadObject).__repr__()¶

Gets interpreter representation of Abjad object.

Returns string.

Read-only properties

beats¶

Gets the tuple of QTargetBeats contained by the QTargetMeasure.

>>> search_tree = abjadext.nauert.UnweightedSearchTree({2: None})
>>> tempo = abjad.MetronomeMark((1, 4), 60)
>>> time_signature = abjad.TimeSignature((4, 4))

>>> q_target_measure = abjadext.nauert.QTargetMeasure(
...     offset_in_ms=1000,
...     search_tree=search_tree,
...     tempo=tempo,
...     time_signature=time_signature,
...     )

>>> for q_target_beat in q_target_measure.beats:
...     abjad.f(q_target_beat)
...
abjadext.nauert.QTargetBeat(
    beatspan=abjad.Duration(1, 4),
    offset_in_ms=abjad.Offset(1000, 1),
    search_tree=abjadext.nauert.UnweightedSearchTree(
        definition={   2: None,
            },
        ),
    tempo=abjad.MetronomeMark(
        reference_duration=abjad.Duration(1, 4),
        units_per_minute=60,
        ),
    )
abjadext.nauert.QTargetBeat(
    beatspan=abjad.Duration(1, 4),
    offset_in_ms=abjad.Offset(2000, 1),
    search_tree=abjadext.nauert.UnweightedSearchTree(
        definition={   2: None,
            },
        ),
    tempo=abjad.MetronomeMark(
        reference_duration=abjad.Duration(1, 4),
        units_per_minute=60,
        ),
    )
abjadext.nauert.QTargetBeat(
    beatspan=abjad.Duration(1, 4),
    offset_in_ms=abjad.Offset(3000, 1),
    search_tree=abjadext.nauert.UnweightedSearchTree(
        definition={   2: None,
            },
        ),
    tempo=abjad.MetronomeMark(
        reference_duration=abjad.Duration(1, 4),
        units_per_minute=60,
        ),
    )
abjadext.nauert.QTargetBeat(
    beatspan=abjad.Duration(1, 4),
    offset_in_ms=abjad.Offset(4000, 1),
    search_tree=abjadext.nauert.UnweightedSearchTree(
        definition={   2: None,
            },
        ),
    tempo=abjad.MetronomeMark(
        reference_duration=abjad.Duration(1, 4),
        units_per_minute=60,
        ),
    )

Returns tuple.

duration_in_ms¶

The duration in milliseconds of the QTargetMeasure:

>>> search_tree = abjadext.nauert.UnweightedSearchTree({2: None})
>>> tempo = abjad.MetronomeMark((1, 4), 60)
>>> time_signature = abjad.TimeSignature((4, 4))

>>> q_target_measure = abjadext.nauert.QTargetMeasure(
...     offset_in_ms=1000,
...     search_tree=search_tree,
...     tempo=tempo,
...     time_signature=time_signature,
...     )

>>> q_target_measure.duration_in_ms
Duration(4000, 1)

Returns duration.

offset_in_ms¶

The offset in milliseconds of the QTargetMeasure:

>>> search_tree = abjadext.nauert.UnweightedSearchTree({2: None})
>>> tempo = abjad.MetronomeMark((1, 4), 60)
>>> time_signature = abjad.TimeSignature((4, 4))

>>> q_target_measure = abjadext.nauert.QTargetMeasure(
...     offset_in_ms=1000,
...     search_tree=search_tree,
...     tempo=tempo,
...     time_signature=time_signature,
...     )

>>> q_target_measure.offset_in_ms
Offset(1000, 1)

Returns offset.

search_tree¶

The search tree of the QTargetMeasure:

>>> search_tree = abjadext.nauert.UnweightedSearchTree({2: None})
>>> tempo = abjad.MetronomeMark((1, 4), 60)
>>> time_signature = abjad.TimeSignature((4, 4))

>>> q_target_measure = abjadext.nauert.QTargetMeasure(
...     offset_in_ms=1000,
...     search_tree=search_tree,
...     tempo=tempo,
...     time_signature=time_signature,
...     )

>>> q_target_measure.search_tree
UnweightedSearchTree(definition={2: None})

Returns search tree.

tempo¶

The tempo of the QTargetMeasure:

>>> search_tree = abjadext.nauert.UnweightedSearchTree({2: None})
>>> tempo = abjad.MetronomeMark((1, 4), 60)
>>> time_signature = abjad.TimeSignature((4, 4))

>>> q_target_measure = abjadext.nauert.QTargetMeasure(
...     offset_in_ms=1000,
...     search_tree=search_tree,
...     tempo=tempo,
...     time_signature=time_signature,
...     )

>>> q_target_measure.tempo
MetronomeMark(reference_duration=Duration(1, 4), units_per_minute=60)

Returns metronome mark.

time_signature¶

The time signature of the QTargetMeasure:

>>> search_tree = abjadext.nauert.UnweightedSearchTree({2: None})
>>> tempo = abjad.MetronomeMark((1, 4), 60)
>>> time_signature = abjad.TimeSignature((4, 4))

>>> q_target_measure = abjadext.nauert.QTargetMeasure(
...     offset_in_ms=1000,
...     search_tree=search_tree,
...     tempo=tempo,
...     time_signature=time_signature,
...     )

>>> q_target_measure.time_signature
TimeSignature((4, 4))

Returns time signature.

use_full_measure¶

The use_full_measure flag of the QTargetMeasure:

>>> search_tree = abjadext.nauert.UnweightedSearchTree({2: None})
>>> tempo = abjad.MetronomeMark((1, 4), 60)
>>> time_signature = abjad.TimeSignature((4, 4))

>>> q_target_measure = abjadext.nauert.QTargetMeasure(
...     offset_in_ms=1000,
...     search_tree=search_tree,
...     tempo=tempo,
...     time_signature=time_signature,
...     )

>>> q_target_measure.use_full_measure
False

Returns true or false.