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"""
======================
Text annotations in 3D
======================
Demonstrates the placement of text annotations on a 3D plot.
Functionality shown:
- Using the `~.Axes3D.text` function with three types of *zdir* values: None,
an axis name (ex. 'x'), or a direction tuple (ex. (1, 1, 0)).
- Using the `~.Axes3D.text` function with the color keyword.
- Using the `.text2D` function to place text on a fixed position on the ax
object.
"""
import matplotlib.pyplot as plt
ax = plt.figure().add_subplot(projection='3d')
# Demo 1: zdir
zdirs = (None, 'x', 'y', 'z', (1, 1, 0), (1, 1, 1))
xs = (1, 4, 4, 9, 4, 1)
ys = (2, 5, 8, 10, 1, 2)
zs = (10, 3, 8, 9, 1, 8)
for zdir, x, y, z in zip(zdirs, xs, ys, zs):
label = '(%d, %d, %d), dir=%s' % (x, y, z, zdir)
ax.text(x, y, z, label, zdir)
# Demo 2: color
ax.text(9, 0, 0, "red", color='red')
# Demo 3: text2D
# Placement 0, 0 would be the bottom left, 1, 1 would be the top right.
ax.text2D(0.05, 0.95, "2D Text", transform=ax.transAxes)
# Tweaking display region and labels
ax.set_xlim(0, 10)
ax.set_ylim(0, 10)
ax.set_zlim(0, 10)
ax.set_xlabel('X axis')
ax.set_ylabel('Y axis')
ax.set_zlabel('Z axis')
plt.show()
# %%
# .. tags::
# plot-type: 3D,
# component: annotation,
# level: beginner
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