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

"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<head>

<title>Frontpage 3D example — Matplotlib 3.2.0 documentation</title>

title="Search within Matplotlib 3.2.0 documentation"

href="../../_static/opensearch.xml"/>

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Note

Click <a class="reference internal" href="#sphx-glr-download-gallery-frontpage-3d-py">here</a> to download the full example code

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<h1>Frontpage 3D example<a class="headerlink" href="#frontpage-3d-example" title="Permalink to this headline">¶</a></h1>

This example reproduces the frontpage 3D example.

<div class="highlight-default notranslate"><div class="highlight"><pre>from matplotlib import cbook

from matplotlib import cm

from matplotlib.colors import <a href="../../api/_as_gen/matplotlib.colors.LightSource.html#matplotlib.colors.LightSource" title="View documentation for matplotlib.colors.LightSource">LightSource</a>

import matplotlib.pyplot as plt

import numpy as np

with <a href="../../api/cbook_api.html#matplotlib.cbook.get_sample_data" title="View documentation for matplotlib.cbook.get_sample_data">cbook.get_sample_data</a>('jacksboro_fault_dem.npz') as file, \

<a href="https://docs.scipy.org/doc/numpy/reference/generated/numpy.load.html#numpy.load" title="View documentation for numpy.load">np.load</a>(file) as dem:

<a href="https://docs.scipy.org/doc/numpy/reference/generated/numpy.ndarray.html#numpy.ndarray" title="View documentation for numpy.ndarray">z</a> = dem['elevation']

<a href="https://docs.python.org/3/library/functions.html#int" title="View documentation for builtins.int">nrows</a>, <a href="https://docs.python.org/3/library/functions.html#int" title="View documentation for builtins.int">ncols</a> = <a href="https://docs.scipy.org/doc/numpy/reference/generated/numpy.ndarray.shape.html#numpy.ndarray.shape" title="View documentation for numpy.ndarray.shape">z.shape</a>

<a href="https://docs.python.org/3/library/stdtypes.html#tuple" title="View documentation for builtins.tuple">region</a> = <a href="https://docs.scipy.org/doc/numpy/reference/generated/numpy.s_.html#numpy.s_" title="View documentation for numpy.s_">np.s_</a>[5:50, 5:50]

<a href="https://docs.scipy.org/doc/numpy/reference/generated/numpy.ndarray.html#numpy.ndarray" title="View documentation for numpy.ndarray">x</a>, <a href="https://docs.scipy.org/doc/numpy/reference/generated/numpy.ndarray.html#numpy.ndarray" title="View documentation for numpy.ndarray">y</a>, <a href="https://docs.scipy.org/doc/numpy/reference/generated/numpy.ndarray.html#numpy.ndarray" title="View documentation for numpy.ndarray">z</a> = <a href="https://docs.scipy.org/doc/numpy/reference/generated/numpy.ndarray.html#numpy.ndarray" title="View documentation for numpy.ndarray">x</a>[<a href="https://docs.python.org/3/library/stdtypes.html#tuple" title="View documentation for builtins.tuple">region</a>], <a href="https://docs.scipy.org/doc/numpy/reference/generated/numpy.ndarray.html#numpy.ndarray" title="View documentation for numpy.ndarray">y</a>[<a href="https://docs.python.org/3/library/stdtypes.html#tuple" title="View documentation for builtins.tuple">region</a>], <a href="https://docs.scipy.org/doc/numpy/reference/generated/numpy.ndarray.html#numpy.ndarray" title="View documentation for numpy.ndarray">z</a>[<a href="https://docs.python.org/3/library/stdtypes.html#tuple" title="View documentation for builtins.tuple">region</a>]

<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.axes.SubplotBase.html#matplotlib.axes.SubplotBase" title="View documentation for matplotlib.axes.SubplotBase">ax</a> = <a href="../../api/_as_gen/matplotlib.pyplot.subplots.html#matplotlib.pyplot.subplots" title="View documentation for matplotlib.pyplot.subplots">plt.subplots</a>(subplot_kw=dict(projection='3d'))

<a href="../../api/_as_gen/matplotlib.colors.LightSource.html#matplotlib.colors.LightSource" title="View documentation for matplotlib.colors.LightSource">ls</a> = <a href="../../api/_as_gen/matplotlib.colors.LightSource.html#matplotlib.colors.LightSource" title="View documentation for matplotlib.colors.LightSource">LightSource</a>(270, 45)

# To use a custom hillshading mode, override the built-in shading and pass

# in the rgb colors of the shaded surface calculated from "shade".

<a href="https://docs.scipy.org/doc/numpy/reference/generated/numpy.ndarray.html#numpy.ndarray" title="View documentation for numpy.ndarray">rgb</a> = <a href="../../api/_as_gen/matplotlib.colors.LightSource.html#matplotlib.colors.LightSource" title="View documentation for matplotlib.colors.LightSource">ls</a>.shade(<a href="https://docs.scipy.org/doc/numpy/reference/generated/numpy.ndarray.html#numpy.ndarray" title="View documentation for numpy.ndarray">z</a>, cmap=cm.gist_earth, vert_exag=0.1, blend_mode='soft')

surf = <a href="../../api/_as_gen/matplotlib.axes.SubplotBase.html#matplotlib.axes.SubplotBase" title="View documentation for matplotlib.axes.SubplotBase">ax</a>.plot_surface(<a href="https://docs.scipy.org/doc/numpy/reference/generated/numpy.ndarray.html#numpy.ndarray" title="View documentation for numpy.ndarray">x</a>, <a href="https://docs.scipy.org/doc/numpy/reference/generated/numpy.ndarray.html#numpy.ndarray" title="View documentation for numpy.ndarray">y</a>, <a href="https://docs.scipy.org/doc/numpy/reference/generated/numpy.ndarray.html#numpy.ndarray" title="View documentation for numpy.ndarray">z</a>, rstride=1, cstride=1, facecolors=<a href="https://docs.scipy.org/doc/numpy/reference/generated/numpy.ndarray.html#numpy.ndarray" title="View documentation for numpy.ndarray">rgb</a>,

linewidth=0, antialiased=False, shade=False)

<a href="../../api/_as_gen/matplotlib.axes.SubplotBase.html#matplotlib.axes.SubplotBase" title="View documentation for matplotlib.axes.SubplotBase">ax</a>.set_xticks([])

<a href="../../api/_as_gen/matplotlib.figure.Figure.html#matplotlib.figure.Figure" title="View documentation for matplotlib.figure.Figure">fig</a>.savefig("surface3d_frontpage.png", dpi=25) # results in 160x120 px image

</pre></div>

</div>

<a class="reference download internal" download="" href="../../_downloads/10009f8e60e3f18cd331d609bb0bef2c/3D.py"><code class="xref download docutils literal notranslate">Download Python source code: 3D.py</code></a></div>

<a class="reference download internal" download="" href="../../_downloads/f2bef93384585b0e07875e7874fa72b1/3D.ipynb"><code class="xref download docutils literal notranslate">Download Jupyter notebook: 3D.ipynb</code></a></div>

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Keywords: matplotlib code example, codex, python plot, pyplot

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