Matplotlib.axes.axes.get_xticklines()
Matplotlib是Python中的一个库,它是NumPy库的数值-数学扩展。Axes包含了大多数图形元素:Axis、Tick、Line2D、Text、Polygon等,并设置坐标系。Axes的实例通过callbacks属性支持回调。
函数:Matplotlib.axes.axes.get_xticklines()
matplotlib库的Axes模块中的Axes.get_xticklines()函数用于返回x标记行作为Line2D实例的列表。
语法:Axes.get_xticklines(self)
参数:该方法不接受任何参数。
返回值:该方法将x行作为Line2D实例的列表返回。
下面的例子演示了matplotlib.axes.axes.get_xticklines()函数在matplotlib.axes中的作用:
示例1
# Implementation of matplotlib function
import numpy as np
import matplotlib.pyplot as plt
from matplotlib.patches import Polygon
def func(x):
return (x - 4) * (x - 6) * (x - 5) + 100
a, b = 2, 9 # integral limits
x = np.linspace(0, 10)
y = func(x)
fig, ax = plt.subplots()
ax.plot(x, y, "k", linewidth = 2)
ax.set_ylim(bottom = 0)
# Make the shaded region
ix = np.linspace(a, b)
iy = func(ix)
verts = [(a, 0), *zip(ix, iy), (b, 0)]
poly = Polygon(verts, facecolor ='green',
edgecolor ='0.5', alpha = 0.4)
ax.add_patch(poly)
ax.text(0.5 * (a + b), 30,
r"\int_a ^ b f(x)\mathrm{d}x",
horizontalalignment ='center',
fontsize = 20)
fig.text(0.9, 0.05, 'x')
fig.text(0.1, 0.9, 'y')
ax.spines['right'].set_visible(False)
ax.spines['top'].set_visible(False)
ax.set_xticks((a, b-a, b))
ax.set_xticklabels(('a', 'valx', 'b'))
w = ax.get_xticklines()
ax.text(3, 200, "xticklines values : ",
fontweight ="bold")
xx = 200
for i in w:
ax.text(4, xx-15, str(i), fontweight ="bold")
xx-= 15
fig.suptitle('matplotlib.axes.Axes.get_xticklines()\
function Example\n\n', fontweight ="bold")
fig.canvas.draw()
plt.show()
输出:
示例2
# Implementation of matplotlib function
import numpy as np
import matplotlib.pyplot as plt
# Fixing random state for reproducibility
np.random.seed(19680801)
x = np.linspace(0, 2 * np.pi, 100)
y = np.sin(x)
y2 = y + 0.2 * np.random.normal(size = x.shape)
fig, ax = plt.subplots()
ax.plot(x, y)
ax.plot(x, y2)
ax.set_xticks([0, np.pi, 2 * np.pi])
ax.set_xticklabels(['0', r'pi', r'2pi'])
ax.spines['left'].set_bounds(-1, 1)
ax.spines['right'].set_visible(False)
ax.spines['top'].set_visible(False)
w = ax.get_xticklines()
ax.text(2, 0.8, "xticklines values : ",
fontweight ="bold")
xx = 0.8
for i in w:
ax.text(2.3, xx-0.2, str(i), fontweight ="bold")
xx-= 0.2
fig.suptitle('matplotlib.axes.Axes.get_xticklines() \
function Example\n\n', fontweight ="bold")
fig.canvas.draw()
plt.show()
输出: