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"""
===============
Spine placement
===============
The position of the axis spines can be influenced using `~.Spine.set_position`.
Note: If you want to obtain arrow heads at the ends of the axes, also check
out the :doc:`/gallery/spines/centered_spines_with_arrows` example.
"""
import matplotlib.pyplot as plt
import numpy as np
# %%
x = np.linspace(0, 2*np.pi, 100)
y = 2 * np.sin(x)
fig, ax_dict = plt.subplot_mosaic(
[['center', 'zero'],
['axes', 'data']]
)
fig.suptitle('Spine positions')
ax = ax_dict['center']
ax.set_title("'center'")
ax.plot(x, y)
ax.spines[['left', 'bottom']].set_position('center')
ax.spines[['top', 'right']].set_visible(False)
ax = ax_dict['zero']
ax.set_title("'zero'")
ax.plot(x, y)
ax.spines[['left', 'bottom']].set_position('zero')
ax.spines[['top', 'right']].set_visible(False)
ax = ax_dict['axes']
ax.set_title("'axes' (0.2, 0.2)")
ax.plot(x, y)
ax.spines.left.set_position(('axes', 0.2))
ax.spines.bottom.set_position(('axes', 0.2))
ax.spines[['top', 'right']].set_visible(False)
ax = ax_dict['data']
ax.set_title("'data' (1, 2)")
ax.plot(x, y)
ax.spines.left.set_position(('data', 1))
ax.spines.bottom.set_position(('data', 2))
ax.spines[['top', 'right']].set_visible(False)
plt.show()
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