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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"

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<title>Text annotations in 3D — Matplotlib 2.2.5 documentation</title>

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<div id="unreleased-message"> You are reading an old version of the documentation (v2.2.5). For the latest version see <a href="https://matplotlib.org/stable/gallery/mplot3d/text3d.html">https://matplotlib.org/stable/gallery/mplot3d/text3d.html</a></div>

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<h1>Text annotations in 3D<a class="headerlink" href="#text-annotations-in-3d" title="Permalink to this headline">¶</a></h1>

Demonstrates the placement of text annotations on a 3D plot.

Functionality shown:

<li>Using the text function with three types of 'zdir' values: None, an axis

name (ex. 'x'), or a direction tuple (ex. (1, 1, 0)).</li>

<li>Using the text function with the color keyword.</li>

<li>Using the text2D function to place text on a fixed position on the ax

object.</li>

</ul>

</div></blockquote>

<div class="highlight-default notranslate"><div class="highlight"><pre>from mpl_toolkits.mplot3d import Axes3D

import matplotlib.pyplot as plt

<a href="../../api/_as_gen/matplotlib.figure.Figure.html#matplotlib.figure.Figure" title="View documentation for matplotlib.figure.Figure">fig</a> = <a href="../../api/_as_gen/matplotlib.pyplot.figure.html#matplotlib.pyplot.figure" title="View documentation for matplotlib.pyplot.figure">plt.figure</a>()

ax = <a href="../../api/_as_gen/matplotlib.figure.Figure.html#matplotlib.figure.Figure" title="View documentation for matplotlib.figure.Figure">fig</a>.gca(projection='3d')

# Demo 1: zdir

<a href="https://docs.python.org/3/library/stdtypes.html#tuple" title="View documentation for builtins.tuple">zdirs</a> = (None, 'x', 'y', 'z', (1, 1, 0), (1, 1, 1))

<a href="https://docs.python.org/3/library/stdtypes.html#tuple" title="View documentation for builtins.tuple">xs</a> = (1, 4, 4, 9, 4, 1)

<a href="https://docs.python.org/3/library/stdtypes.html#tuple" title="View documentation for builtins.tuple">ys</a> = (2, 5, 8, 10, 1, 2)

<a href="https://docs.python.org/3/library/stdtypes.html#tuple" title="View documentation for builtins.tuple">zs</a> = (10, 3, 8, 9, 1, 8)

for <a href="https://docs.python.org/3/library/stdtypes.html#tuple" title="View documentation for builtins.tuple">zdir</a>, <a href="https://docs.python.org/3/library/functions.html#int" title="View documentation for builtins.int">x</a>, <a href="https://docs.python.org/3/library/functions.html#int" title="View documentation for builtins.int">y</a>, <a href="https://docs.python.org/3/library/functions.html#int" title="View documentation for builtins.int">z</a> in zip(<a href="https://docs.python.org/3/library/stdtypes.html#tuple" title="View documentation for builtins.tuple">zdirs</a>, <a href="https://docs.python.org/3/library/stdtypes.html#tuple" title="View documentation for builtins.tuple">xs</a>, <a href="https://docs.python.org/3/library/stdtypes.html#tuple" title="View documentation for builtins.tuple">ys</a>, <a href="https://docs.python.org/3/library/stdtypes.html#tuple" title="View documentation for builtins.tuple">zs</a>):

<a href="https://docs.python.org/3/library/stdtypes.html#str" title="View documentation for builtins.str">label</a> = '(%d, %d, %d), dir=%s' % (<a href="https://docs.python.org/3/library/functions.html#int" title="View documentation for builtins.int">x</a>, <a href="https://docs.python.org/3/library/functions.html#int" title="View documentation for builtins.int">y</a>, <a href="https://docs.python.org/3/library/functions.html#int" title="View documentation for builtins.int">z</a>, <a href="https://docs.python.org/3/library/stdtypes.html#tuple" title="View documentation for builtins.tuple">zdir</a>)

ax.text(<a href="https://docs.python.org/3/library/functions.html#int" title="View documentation for builtins.int">x</a>, <a href="https://docs.python.org/3/library/functions.html#int" title="View documentation for builtins.int">y</a>, <a href="https://docs.python.org/3/library/functions.html#int" title="View documentation for builtins.int">z</a>, <a href="https://docs.python.org/3/library/stdtypes.html#str" title="View documentation for builtins.str">label</a>, <a href="https://docs.python.org/3/library/stdtypes.html#tuple" title="View documentation for builtins.tuple">zdir</a>)

# 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')

<a href="../../api/_as_gen/matplotlib.pyplot.show.html#matplotlib.pyplot.show" title="View documentation for matplotlib.pyplot.show">plt.show</a>()

</pre></div>

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<a class="reference download internal" download="" href="../../_downloads/482e9baeccbd5d8ecaa4088ed948e7ef/text3d.py"><code class="xref download docutils literal notranslate">Download Python source code: text3d.py</code></a></div>

<a class="reference download internal" download="" href="../../_downloads/4d35146e7b8b664ae018570fca30b23b/text3d.ipynb"><code class="xref download docutils literal notranslate">Download Jupyter notebook: text3d.ipynb</code></a></div>

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