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Merge pull request #25968 from anntzer/dtf
Cleanup scalarformatter.py example.
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galleries/examples/ticks/scalarformatter.py

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The default tick formatter
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==========================
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The example shows use of the default `.ScalarFormatter` with different
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settings.
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Example 1 : Default
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Example 2 : With no Numerical Offset
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Example 3 : With Mathtext
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By default, tick labels are formatted using a `.ScalarFormatter`, which can be
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configured via `~.axes.Axes.ticklabel_format`. This example illustrates some
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possible configurations:
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- Default.
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- ``useMathText=True``: Fancy formatting of mathematical expressions.
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- ``useOffset=False``: Do not use offset notation; see
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`.ScalarFormatter.set_useOffset`.
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"""
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import matplotlib.pyplot as plt
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import numpy as np
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# %%
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# Example 1
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x = np.arange(0, 1, .01)
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fig, [[ax1, ax2], [ax3, ax4]] = plt.subplots(2, 2, figsize=(6, 6))
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fig.text(0.5, 0.975, 'Default settings',
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horizontalalignment='center',
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verticalalignment='top')
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ax1.plot(x * 1e5 + 1e10, x * 1e-10 + 1e-5)
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ax2.plot(x * 1e5, x * 1e-4)
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ax3.plot(-x * 1e5 - 1e10, -x * 1e-5 - 1e-10)
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ax4.plot(-x * 1e5, -x * 1e-4)
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fig.subplots_adjust(wspace=0.7, hspace=0.6)
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# %%
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# Example 2
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x = np.arange(0, 1, .01)
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fig, [[ax1, ax2], [ax3, ax4]] = plt.subplots(2, 2, figsize=(6, 6))
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fig.text(0.5, 0.975, 'No numerical offset',
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horizontalalignment='center',
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verticalalignment='top')
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ax1.plot(x * 1e5 + 1e10, x * 1e-10 + 1e-5)
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ax1.ticklabel_format(useOffset=False)
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ax2.plot(x * 1e5, x * 1e-4)
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ax2.ticklabel_format(useOffset=False)
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ax3.plot(-x * 1e5 - 1e10, -x * 1e-5 - 1e-10)
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ax3.ticklabel_format(useOffset=False)
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ax4.plot(-x * 1e5, -x * 1e-4)
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ax4.ticklabel_format(useOffset=False)
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fig.subplots_adjust(wspace=0.7, hspace=0.6)
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# %%
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# Example 3
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x = np.arange(0, 1, .01)
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fig, [[ax1, ax2], [ax3, ax4]] = plt.subplots(2, 2, figsize=(6, 6))
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fig.text(0.5, 0.975, 'With mathtext',
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horizontalalignment='center',
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verticalalignment='top')
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ax1.plot(x * 1e5 + 1e10, x * 1e-10 + 1e-5)
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ax1.ticklabel_format(useMathText=True)
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ax2.plot(x * 1e5, x * 1e-4)
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ax2.ticklabel_format(useMathText=True)
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ax3.plot(-x * 1e5 - 1e10, -x * 1e-5 - 1e-10)
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ax3.ticklabel_format(useMathText=True)
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ax4.plot(-x * 1e5, -x * 1e-4)
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ax4.ticklabel_format(useMathText=True)
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fig.subplots_adjust(wspace=0.7, hspace=0.6)
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fig, axs = plt.subplots(
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3, 3, figsize=(9, 9), layout="constrained", gridspec_kw={"hspace": 0.1})
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for col in axs.T:
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col[0].plot(x * 1e5 + 1e10, x * 1e-10 + 1e-5)
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col[1].plot(x * 1e5, x * 1e-4)
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col[2].plot(-x * 1e5 - 1e10, -x * 1e-5 - 1e-10)
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for ax in axs[:, 1]:
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ax.ticklabel_format(useMathText=True)
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for ax in axs[:, 2]:
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ax.ticklabel_format(useOffset=False)
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plt.rcParams.update({"axes.titleweight": "bold", "axes.titley": 1.1})
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axs[0, 0].set_title("default settings")
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axs[0, 1].set_title("useMathText=True")
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axs[0, 2].set_title("useOffset=False")
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plt.show()

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