def plot_bloch_vector(bloch, title="", ax=None, figsize=None):
"""Plot the Bloch sphere.
Plot a sphere, axes, the Bloch vector, and its projections onto each axis.
Args:
bloch (list[double]): array of three elements where [<x>, <y>, <z>]
title (str): a string that represents the plot title
ax (matplotlib.Axes): An Axes to use for rendering the bloch sphere
figsize (tuple): Figure size in inches. Has no effect is passing `ax`.
Returns:
Figure: A matplotlib figure instance if `ax = None`.
Raises:
ImportError: Requires matplotlib.
"""
if not HAS_MATPLOTLIB:
raise ImportError('Must have Matplotlib installed.')
if figsize is None:
figsize = (5, 5)
B = Bloch(axes=ax)
B.add_vectors(bloch)
B.render(title=title)
if ax is None:
fig = B.fig
fig.set_size_inches(figsize[0], figsize[1])
plt.close(fig)
return fig
return None
def plot_bloch_vector(bloch, title="", ax=None):
"""Plot the Bloch sphere.
Plot a sphere, axes, the Bloch vector, and its projections onto each axis.
Args:
bloch (list[double]): array of three elements where [<x>, <y>,<z>]
title (str): a string that represents the plot title
ax (matplotlib.Axes): An Axes to use for rendering the bloch sphere
"""
B = Bloch(axes=ax)
B.add_vectors(bloch)
B.render(title=title)