Matplotlib是Python中的一个库，它是数字的-NumPy库的数学扩展。轴类包含大多数图形元素：Axis，Tick，Line2D，Text，Polygon等，并设置坐标系。 Axes实例通过callbacks属性支持回调。
matplotlib.axes.Axes.get_xgridlines()函数
matplotlib库的axiss模块中的Axes.get_xgridlines()函数用于将x网格线作为Line2D实例的列表返回。
用法： Axes.get_xgridlines(self)
参数：此方法不接受任何参数。
返回值：此方法返回x网格线作为Line2D实例的列表。
以下示例说明了matplotlib.axes中的matplotlib.axes.Axes.get_xgridlines()函数：
范例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_xgridlines()
ax.text(3, 200, "xgridlines values:",
fontweight ="bold")
xx = 200
for i in w:
ax.text(3, xx-15, str(i), fontweight ="bold")
xx-= 15
fig.suptitle('matplotlib.axes.Axes.get_xgridlines()\
function Example\n\n', fontweight ="bold")
fig.canvas.draw()
plt.show()输出：
范例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'2$pi$'])
ax.spines['left'].set_bounds(-1, 1)
ax.spines['right'].set_visible(False)
ax.spines['top'].set_visible(False)
w = ax.get_xgridlines()
ax.text(2, 0.5, "xgridlines values:",
fontweight ="bold")
xx = 0.5
for i in w:
ax.text(2, xx-0.2, str(i), fontweight ="bold")
xx-= 0.2
fig.suptitle('matplotlib.axes.Axes.get_xgridlines() \
function Example\n\n', fontweight ="bold")
fig.canvas.draw()
plt.show()输出：
注：本文由纯净天空筛选整理自SHUBHAMSINGH10大神的英文原创作品 Matplotlib.axes.Axes.get_xgridlines() in Python。非经特殊声明，原始代码版权归原作者所有，本译文未经允许或授权，请勿转载或复制。