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Cleanup scalarformatter.py example. #25968

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May 25, 2023
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Cleanup scalarformatter.py example. #25968

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96 changes: 25 additions & 71 deletions galleries/examples/ticks/scalarformatter.py
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Original file line number Diff line number Diff line change
Expand Up @@ -3,82 +3,36 @@
The default tick formatter
==========================

The example shows use of the default `.ScalarFormatter` with different
settings.

Example 1 : Default

Example 2 : With no Numerical Offset

Example 3 : With Mathtext
By default, tick labels are formatted using a `.ScalarFormatter`, which can be
configured via `~.axes.Axes.ticklabel_format`. This example illustrates some
possible configurations:

- Default.
- ``useMathText=True``: Fancy formatting of mathematical expressions.
- ``useOffset=False``: Do not use offset notation; see
`.ScalarFormatter.set_useOffset`.
"""

import matplotlib.pyplot as plt
import numpy as np

# %%
# Example 1

x = np.arange(0, 1, .01)
fig, [[ax1, ax2], [ax3, ax4]] = plt.subplots(2, 2, figsize=(6, 6))
fig.text(0.5, 0.975, 'Default settings',
horizontalalignment='center',
verticalalignment='top')

ax1.plot(x * 1e5 + 1e10, x * 1e-10 + 1e-5)

ax2.plot(x * 1e5, x * 1e-4)

ax3.plot(-x * 1e5 - 1e10, -x * 1e-5 - 1e-10)

ax4.plot(-x * 1e5, -x * 1e-4)

fig.subplots_adjust(wspace=0.7, hspace=0.6)

# %%
# Example 2

x = np.arange(0, 1, .01)
fig, [[ax1, ax2], [ax3, ax4]] = plt.subplots(2, 2, figsize=(6, 6))
fig.text(0.5, 0.975, 'No numerical offset',
horizontalalignment='center',
verticalalignment='top')

ax1.plot(x * 1e5 + 1e10, x * 1e-10 + 1e-5)
ax1.ticklabel_format(useOffset=False)

ax2.plot(x * 1e5, x * 1e-4)
ax2.ticklabel_format(useOffset=False)

ax3.plot(-x * 1e5 - 1e10, -x * 1e-5 - 1e-10)
ax3.ticklabel_format(useOffset=False)

ax4.plot(-x * 1e5, -x * 1e-4)
ax4.ticklabel_format(useOffset=False)

fig.subplots_adjust(wspace=0.7, hspace=0.6)

# %%
# Example 3

x = np.arange(0, 1, .01)
fig, [[ax1, ax2], [ax3, ax4]] = plt.subplots(2, 2, figsize=(6, 6))
fig.text(0.5, 0.975, 'With mathtext',
horizontalalignment='center',
verticalalignment='top')

ax1.plot(x * 1e5 + 1e10, x * 1e-10 + 1e-5)
ax1.ticklabel_format(useMathText=True)

ax2.plot(x * 1e5, x * 1e-4)
ax2.ticklabel_format(useMathText=True)

ax3.plot(-x * 1e5 - 1e10, -x * 1e-5 - 1e-10)
ax3.ticklabel_format(useMathText=True)

ax4.plot(-x * 1e5, -x * 1e-4)
ax4.ticklabel_format(useMathText=True)

fig.subplots_adjust(wspace=0.7, hspace=0.6)
fig, axs = plt.subplots(
3, 3, figsize=(9, 9), layout="constrained", gridspec_kw={"hspace": 0.1})

for col in axs.T:
col[0].plot(x * 1e5 + 1e10, x * 1e-10 + 1e-5)
col[1].plot(x * 1e5, x * 1e-4)
col[2].plot(-x * 1e5 - 1e10, -x * 1e-5 - 1e-10)

for ax in axs[:, 1]:
ax.ticklabel_format(useMathText=True)
for ax in axs[:, 2]:
ax.ticklabel_format(useOffset=False)

plt.rcParams.update({"axes.titleweight": "bold", "axes.titley": 1.1})
axs[0, 0].set_title("default settings")
axs[0, 1].set_title("useMathText=True")
axs[0, 2].set_title("useOffset=False")

plt.show()