制图之一

"""
=======================================================
Controlling style of text and labels using a dictionary
=======================================================

This example shows how to share parameters across many text objects and labels
by creating a dictionary of options passed across several functions.
"""

import numpy as np
import matplotlib.pyplot as plt


font = {'family': 'serif',
      'color':  'darkred',
      'weight': 'normal',
      'size': 16,
      }

x = np.linspace(0.0, 5.0, 100)
y = np.cos(2*np.pi*x) * np.exp(-x)

plt.plot(x, y, 'k')
plt.title('Damped exponential decay', fontdict=font)
plt.text(2, 0.65, r'$\cos(2 \pi t) \exp(-t)$', fontdict=font)
plt.xlabel('time (s)', fontdict=font)
plt.ylabel('voltage (mV)', fontdict=font)

# Tweak spacing to prevent clipping of ylabel
plt.subplots_adjust(left=0.1, right= 0.9, bottom=0.1, top=0.6)
plt.show()

a0b9bcc0-3c4c-44a6-82f1-9bce6df4d631.png

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