Python中的 Matplotlib.axes.Axes.xaxis_inverted()
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.xaxis_inverted()函数
matplotlib 库的 axes 模块中的Axes.xaxis_inverted()函数返回 x 轴是否反转。
Syntax: Axes.xaxis_inverted(self)
Parameters: This method does not accepts any parameters.
Returns:This method return whether the x-axis is inverted or not.
下面的示例说明了 matplotlib.axes 中的 matplotlib.axes.Axes.xaxis_inverted()函数:
示例 1:
# Implementation of matplotlib function
import matplotlib.pyplot as plt
import numpy as np
fig, ax = plt.subplots()
ax.axvspan(1.5, 2.5, facecolor ='g', alpha = 0.7)
ax.invert_xaxis()
ax.set_title('matplotlib.axes.Axes.xaxis_inverted()\
Example\n',
fontsize = 14, fontweight ='bold')
x = ax.xaxis_inverted()
ans ="No"
if x:
ans ="Yes"
ax.text(2.2, 1.02, "X-axis is inverted ? : " + ans,
style ='italic', fontsize = 12)
plt.show()
输出:
示例 2:
# Implementation of matplotlib function
import matplotlib.pyplot as plt
import numpy as np
np.random.seed(19680801)
plt.rcdefaults()
fig, ax = plt.subplots()
people = ('Geek1', 'Geek2', 'Geek3',
'Geek4', 'Geek5')
y_pos = np.arange(len(people))
performance = 3 + 4.5 * np.random.rand(len(people))**2
error = np.random.rand(len(people))
ax.barh(y_pos, performance, xerr = error,
align ='center', color ="green")
ax.set_yticks(y_pos)
ax.set_yticklabels(people)
ax.invert_xaxis()
ax.set_xlabel('Performance')
x = ax.xaxis_inverted()
ans ="No"
if x:
ans ="Yes"
ax.set_title('matplotlib.axes.Axes.xaxis_inverted()\
Example\n',
fontsize = 14, fontweight ='bold')
ax.text(6, 4.75, "X-axis is inverted ? : " + ans,
style ='italic', fontsize = 12)
plt.show()
输出: