Python中的 Matplotlib.axes.Axes.set_title()

Matplotlib是Python中的一个库，它是 NumPy 库的数值数学扩展。 Axes 类包含大部分图形元素：Axis、Tick、Line2D、Text、Polygon 等，并设置坐标系。 Axes 的实例通过回调属性支持回调。

matplotlib.axes.Axes.set_title()函数

matplotlib 库的 axes 模块中的Axes.set_title()函数用于设置轴的标题。

Syntax: Axes.set_title(self, label, fontdict=None, loc=’center’, pad=None, **kwargs)

Parameters: This method accepts the following parameters.

label : This parameter is the Text to use for the title.
fontdict : This parameter is the dictionary controlling the appearance of the title text.
loc : This parameter is used to set the location of the title {‘center’, ‘left’, ‘right’}.
pad : This parameter is the offset of the title from the top of the axes, in points.

Returns:This method returns the matplotlib text instance representing the title.

编程需要懂一点英语

下面的示例说明了 matplotlib.axes 中的 matplotlib.axes.Axes.set_title()函数：

示例 1：

# Implementation of matplotlib function
import os
from matplotlib import font_manager as fm, rcParams
import matplotlib.pyplot as plt
  
fig, ax = plt.subplots()
  
fpath = os.path.join(rcParams["datapath"], 
                     "fonts/ttf/cmr10.ttf")
  
prop = fm.FontProperties(fname = fpath)
fname = os.path.split(fpath)[1]
ax.set_title('Title with special font: {}'.format(fname),
             fontproperties = prop, 
             fontsize = 14)
  
plt.show()

输出：

示例 2：

# Implementation of matplotlib function
import numpy as np
import matplotlib.pyplot as plt
  
x = np.arange(0.1, 5, 0.1)
y = np.exp(-x)
  
yerr = 0.1 + 0.1 * np.sqrt(x)
  
fig, axs = plt.subplots(nrows = 1,
                        ncols = 2, 
                        sharex = True)
ax = axs[0]
ax.errorbar(x, y, yerr = yerr, 
            color ="green")
ax.set_title('Title of Axes 1', 
             fontweight ="bold")
  
ax = axs[1]
ax.errorbar(x, y, yerr = yerr,
            errorevery = 5, 
            color ="green")
  
ax.set_title('Title of Axes 2',
             fontweight ="bold")
  
  
  
fig.suptitle('matplotlib.axes.Axes.set_title() \
function Example\n')
  
plt.show()

输出：