mirror of https://github.com/Qiskit/qiskit.git
141 lines
6.5 KiB
YAML
141 lines
6.5 KiB
YAML
---
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features:
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A new kwarg, ``cregbundle`` has been added to the
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:func:`qiskit.visualization.circuit_drawer` function and the
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:class:`~qiskit.circuit.QuantumCircuit` method
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:meth:`~qiskit.circuit.QuantumCircuit.draw`. When set to ``True`` the
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cregs will be bundled into a single line in circuit visualizations for the
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``text`` and ``mpl`` drawers. The default value is ``True``.
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Addresses issue `#4290 <https://github.com/Qiskit/qiskit-terra/issues/4290>`_.
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For example:
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.. code-block::
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from qiskit import QuantumCircuit
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circuit = QuantumCircuit(2)
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circuit.measure_all()
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circuit.draw(output='mpl', cregbundle=True)
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A new kwarg, ``initial_state`` has been added to the
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:func:`qiskit.visualization.circuit_drawer` function and the
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:class:`~qiskit.circuit.QuantumCircuit` method
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:meth:`~qiskit.circuit.QuantumCircuit.draw`. When set to ``True`` the
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initial state will now be included in circuit visualizations for all drawers.
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Addresses issue `#4293 <https://github.com/Qiskit/qiskit-terra/issues/4293>`_.
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For example:
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.. code-block::
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from qiskit import QuantumCircuit
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circuit = QuantumCircuit(2)
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circuit.measure_all()
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circuit.draw(output='mpl', initial_state=True)
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Labels will now be displayed when using the 'mpl' drawer. There are 2
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types of labels - gate labels and control labels. Gate labels will
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replace the gate name in the display. Control labels will display
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above or below the controls for a gate.
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Fixes issues #3766, #4580
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Addresses issues `#3766 <https://github.com/Qiskit/qiskit-terra/issues/3766>`_
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and `#4580 <https://github.com/Qiskit/qiskit-terra/issues/4580>`_.
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For example:
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.. code-block::
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from qiskit import QuantumCircuit
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from qiskit.circuit.library.standard_gates import YGate
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circuit = QuantumCircuit(2)
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circuit.append(YGate(label='A Y Gate').control(label='Y Control'), [0, 1])
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circuit.draw(output='mpl')
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deprecations:
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The style dictionary key ``cregbundle`` has been deprecated and will be
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removed in a future release. This has been replaced by the
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kwarg ``cregbundle`` added to the
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:func:`qiskit.visualization.circuit_drawer` function and the
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:class:`~qiskit.circuit.QuantumCircuit` method
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:meth:`~qiskit.circuit.QuantumCircuit.draw`.
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fixes:
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In some situations long gate and register names would overflow, or leave
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excessive empty space around them when using the ``'mpl'`` output backend
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for the :meth:`qiskit.circuit.QuantumCircuit.draw` method and
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:func:`qiskit.visualization.circuit_drawer` function. This has been fixed
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by using correct text widths for a proportional font. Fixes
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`#4611 <https://github.com/Qiskit/qiskit-terra/issues/4611>`__,
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`#4605 <https://github.com/Qiskit/qiskit-terra/issues/4605>`__,
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`#4545 <https://github.com/Qiskit/qiskit-terra/issues/4545>`__,
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`#4497 <https://github.com/Qiskit/qiskit-terra/issues/4497>`__,
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`#4449 <https://github.com/Qiskit/qiskit-terra/issues/4449>`__, and
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`#3641 <https://github.com/Qiskit/qiskit-terra/issues/3641>`__.
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When using the ``style` kwarg on the
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:meth:`qiskit.circuit.QuantumCircuit.draw` or
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:func:`qiskit.visualization.circuit_drawer` with the ``'mpl'`` output
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backend the dictionary key ``'showindex'`` set to ``True``, the index
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numbers at the top of the column did not line up properly. This has been
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fixed.
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When using ``cregbunde=True`` with the ``'mpl'`` output backend for the
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:meth:`qiskit.circuit.QuantumCircuit.draw` method and
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:func:`qiskit.visualization.circuit_drawer` function and measuring onto
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a second fold, the measure arrow would overwrite the creg count. The count
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was moved to the left to prevent this. Fixes
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`#4148 <https://github.com/Qiskit/qiskit-terra/issues/4148>`__.
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When using the ``'mpl'`` output backend for the
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:meth:`qiskit.circuit.QuantumCircuit.draw` method and
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:func:`qiskit.visualization.circuit_drawer` function
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:class:`~qiskit.circuit.library.CSwapGate` gates and a controlled
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:class:`~qiskit.circuit.library.RZZGate` gates now display with their
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appropriate symbols instead of in a box.
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When using the ``'mpl'`` output backend for the
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:meth:`qiskit.circuit.QuantumCircuit.draw` method and
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:func:`qiskit.visualization.circuit_drawer` function controlled gates
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created using the :meth:`~qiskit.circuit.QuantumCircuit.to_gate` method
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were not properly spaced and could overlap with other gates in the circuit
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diagram. This issue has been fixed.
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When using the ``'mpl'`` output backend for the
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:meth:`qiskit.circuit.QuantumCircuit.draw` method and
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:func:`qiskit.visualization.circuit_drawer` function
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gates with arrays as parameters, such as
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:class:`~qiskit.extensions.HamiltonianGate`, no longer display with
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excessive space around them. Fixes
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`#4352 <https://github.com/Qiskit/qiskit-terra/issues/4352>`__.
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When using the ``'mpl'`` output backend for the
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:meth:`qiskit.circuit.QuantumCircuit.draw` method and
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:func:`qiskit.visualization.circuit_drawer` function
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generic gates created by directly instantiating :class:`qiskit.circuit.Gate`
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method now display the proper background color for the gate. Fixes
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`#4496 <https://github.com/Qiskit/qiskit-terra/issues/4496>`__.
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When using the ``'mpl'`` output backend for the
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:meth:`qiskit.circuit.QuantumCircuit.draw` method and
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:func:`qiskit.visualization.circuit_drawer` function
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an ``AttributeError`` that occurred when using
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:class:`~qiskit.extensions.Isometry` or :class:`~qiskit.extensions.Initialize`
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has been fixed. Fixes
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`#4439 <https://github.com/Qiskit/qiskit-terra/issues/4439>`__.
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When using the ``'mpl'`` output backend for the
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:meth:`qiskit.circuit.QuantumCircuit.draw` method and
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:func:`qiskit.visualization.circuit_drawer` function
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some open-controlled gates did not properly display the open controls.
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This has been corrected so that open controls are properly displayed
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as open circles. Fixes
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`#4248 <https://github.com/Qiskit/qiskit-terra/issues/4248>`__.
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When using the ``'mpl'`` output backend for the
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:meth:`qiskit.circuit.QuantumCircuit.draw` method and
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:func:`qiskit.visualization.circuit_drawer` function
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setting the ``fold`` kwarg to -1 will now properly display the circuit
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without folding. Fixes
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`#4506 <https://github.com/Qiskit/qiskit-terra/issues/4506>`__.
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