Python 中的 Matplotlib.axes.Axes.get_lines()
原文:https://www.geeksforgeeks.org/matplotlib-axes-axes-get_line-in-python/
Matplotlib 是 Python 中的一个库，是 NumPy 库的数值-数学扩展。轴类包含了大部分的图形元素:轴、刻度、线二维、文本、多边形等。，并设置坐标系。Axes 的实例通过回调属性支持回调。
matplotlib.axes.Axes.get_lines()函数
matplotlib 库的 axes 模块中的 Axes.get_lines()函数用于返回 Axes 包含的行列表
语法:axes.get_line(self)
参数:此方法不接受任何参数。
返回:该方法返回坐标轴包含的行列表。
下面的例子说明了 matplotlib.axes.Axes.get_lines()函数在 matplotlib.axes 中的作用:
例 1:
# Implementation of matplotlib function
from matplotlib import colors
from matplotlib.ticker import PercentFormatter
import numpy as np
import matplotlib.pyplot as plt
N_points = 100000
x = np.random.randn(N_points)
y = .4 * x + np.random.randn(100000) + 5
fig, ax = plt.subplots()
ax.hist2d(x, y, bins = 100,
norm = colors.LogNorm(),
cmap ="Greens")
w = list(ax.get_lines())
if len(w)== 0:
ax.text(-2, 8.5,
"No line contained by the Axes \n")
else:
ax.text(-3, 8.5,
"List of the lines contained by the Axes \n")
x = 8.5
for i in w:
ax.text(-3, x-0.5, str(i))
x-= 0.5
fig.suptitle('matplotlib.axes.Axes.get_lines() \
function Example', fontweight ="bold")
plt.show()
输出:
例 2:
# Implementation of matplotlib function
import numpy as np
import matplotlib.pyplot as plt
import matplotlib.patches as mpatches
fig, ax = plt.subplots()
x, y = 10 * np.random.rand(2, 1000)
ax.plot(x, y, 'go', alpha = 0.2)
circ = mpatches.Circle((0.5, 0.5),
0.25,
transform = ax.transAxes,
facecolor ='blue',
alpha = 0.75)
ax.add_patch(circ)
w = list(ax.get_lines())
if len(w)== 0:
ax.text(1, 8.5,
"No line contained by the Axes \n")
else:
ax.text(1, 8.5,
"List of the lines contained by the Axes \n")
x = 8.5
for i in w:
ax.text(1, x-0.5, str(i))
x-= 0.5
fig.suptitle('matplotlib.axes.Axes.get_lines() \
function Example', fontweight ="bold")
plt.show()
输出:
