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Commit 440adff

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tacaswelltacaswell
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Merge pull request #7072 from rougier/showcase
DOC: Replace anatomy of a plot figure
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‎doc/faq/anatomy.png

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‎doc/faq/fig_map.png

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‎doc/faq/usage_faq.rst

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@@ -50,12 +50,12 @@ completely, leaving a purely object-oriented approach.
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Parts of a Figure
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=================
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.. image:: fig_map.png
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.. image:: anatomy.png
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:class:`~matplotlib.figure.Figure`
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----------------------------------
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The **whole** figure (marked as the outer red box). The figure keeps
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The **whole** figure. The figure keeps
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track of all the child :class:`~matplotlib.axes.Axes`, a smattering of
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'special' artists (titles, figure legends, etc), and the **canvas**.
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(Don't worry too much about the canvas, it is crucial as it is the

‎examples/showcase/anatomy.py

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# This figure shows the name of several matplotlib elements composing a figure
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import numpy as np
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import matplotlib.pyplot as plt
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from matplotlib.ticker import MultipleLocator, FuncFormatter
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np.random.seed(123)
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X = np.linspace(0.5, 3.5, 100)
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Y1 = 3+np.cos(X)
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Y2 = 1+np.cos(1+X/0.75)/2
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Y3 = np.random.uniform(Y1, Y2, len(X))
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fig = plt.figure(figsize=(8, 8), facecolor="w")
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ax = fig.add_subplot(1, 1, 1, aspect=1)
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def minor_tick(x, pos):
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if not x % 1.0:
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return ""
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return "%.2f" % x
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ax.xaxis.set_major_locator(MultipleLocator(1.000))
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ax.xaxis.set_minor_locator(MultipleLocator(0.250))
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ax.yaxis.set_major_locator(MultipleLocator(1.000))
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ax.yaxis.set_minor_locator(MultipleLocator(0.250))
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ax.xaxis.set_minor_formatter(FuncFormatter(minor_tick))
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ax.set_xlim(0, 4)
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ax.set_ylim(0, 4)
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ax.tick_params(which='major', width=1.0)
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ax.tick_params(which='major', length=10)
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ax.tick_params(which='minor', width=1.0, labelsize=10)
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ax.tick_params(which='minor', length=5, labelsize=10, labelcolor='0.25')
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ax.grid(linestyle="--", linewidth=0.5, color='.25', zorder=-10)
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ax.plot(X, Y1, c=(0.25, 0.25, 1.00), lw=2, label="Blue signal", zorder=10)
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ax.plot(X, Y2, c=(1.00, 0.25, 0.25), lw=2, label="Red signal")
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ax.scatter(X, Y3, c='w')
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ax.set_title("Anatomy of a figure", fontsize=20)
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ax.set_xlabel("X axis label")
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ax.set_ylabel("Y axis label")
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ax.legend(frameon=False)
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def circle(x, y, radius=0.15):
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from matplotlib.patches import Circle
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from matplotlib.patheffects import withStroke
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circle = Circle((x, y), radius, clip_on=False, zorder=10, linewidth=1,
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edgecolor='black', facecolor=(0, 0, 0, .0125),
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path_effects=[withStroke(linewidth=5, foreground='w')])
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ax.add_artist(circle)
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def text(x, y, text):
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ax.text(x, y, text, backgroundcolor="white",
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ha='center', va='top', weight='bold', color='blue')
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# Minor tick
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circle(0.50, -.05)
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text(0.50, -0.25, "Minor tick label")
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# Major tick
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circle(4.00, 2.00)
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text(4.00, 1.80, "Major tick")
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# Minor tick
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circle(0.25, 4.00)
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text(0.25, 3.80, "Minor tick")
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# Major tick label
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circle(-0.05, 3.00)
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text(-0.05, 2.80, "Major tick label")
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# X Label
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circle(1.80, -0.22)
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text(1.80, -0.4, "X axis label")
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# Y Label
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circle(-0.20, 1.80)
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text(-0.20, 1.6, "Y axis label")
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# Title
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circle(1.60, 4.10)
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text(1.60, 3.9, "Title")
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# Blue plot
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circle(1.75, 2.80)
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text(1.75, 2.60, "Line\n(line plot)")
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# Red plot
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circle(1.20, 0.60)
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text(1.20, 0.40, "Line\n(line plot)")
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# Scatter plot
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circle(3.20, 1.75)
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text(3.20, 1.55, "Markers\n(scatter plot)")
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# Grid
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circle(3.00, 3.00)
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text(3.00, 2.80, "Grid")
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# Legend
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circle(3.70, 3.75)
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text(3.70, 3.55, "Legend")
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# Axes
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circle(0.5, 0.5)
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text(0.5, 0.3, "Axes")
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# Figure
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circle(-0.3, 0.65)
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text(-0.3, 0.45, "Figure")
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color = 'blue'
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ax.annotate('Spines', xy=(4.0, 0.35), xycoords='data',
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xytext=(3.3, 0.5), textcoords='data',
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weight='bold', color=color,
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arrowprops=dict(arrowstyle='->',
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connectionstyle="arc3",
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color=color))
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ax.annotate('', xy=(3.15, 0.0), xycoords='data',
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xytext=(3.45, 0.45), textcoords='data',
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weight='bold', color=color,
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arrowprops=dict(arrowstyle='->',
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connectionstyle="arc3",
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color=color))
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ax.text(4.0, -0.4, "Made with http://matplotlib.org",
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fontsize=10, ha="right", color='.5')
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plt.show()

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