Python中的 Matplotlib.axes.Axes.findobj()
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.findobj()函数
matplotlib 库的 axes 模块中的Axes.findobj()函数用于查找艺术家对象。
Syntax: Axes.findobj(self, match=None, include_self=True)
Parameters: This method accepts the following parameters.
- match : This parameter is the filter criterion for the matches. It default value is None.
- include_self : This parameter include self in the list to be checked for a match.
Returns: This method return artists(list of Artist).
下面的示例说明了 matplotlib.axes 中的 matplotlib.axes.Axes.findobj()函数：
示例 1：
# Implementation of matplotlib function
import matplotlib.pyplot as plt
from matplotlib.lines import Line2D
import numpy as np
from numpy.random import rand
fig, ax2 = plt.subplots()
ax2.bar(range(10), rand(10), picker = True)
for label in ax2.get_xticklabels():
label.set_picker(True)
def onpick1(event):
if isinstance(event.artist, Line2D):
thisline = event.artist
xdata = thisline.get_xdata()
ydata = thisline.get_ydata()
ind = event.ind
print('onpick1 line:',
np.column_stack([xdata[ind],
ydata[ind]]))
elif isinstance(event.artist, Rectangle):
patch = event.artist
print('onpick1 patch:', patch.get_path())
elif isinstance(event.artist, Text):
text = event.artist
print('onpick1 text:', text.get_text())
print("Value return : \n", *list(ax2.findobj()), sep ="\n")
fig.suptitle('matplotlib.axes.Axes.findobj() function Example',
fontweight ="bold")
plt.show()
输出： _in_Python_0.jpg)
Value return :
Rectangle(xy=(-0.4, 0), width=0.8, height=0.815228, angle=0)
Rectangle(xy=(0.6, 0), width=0.8, height=0.655121, angle=0)
Rectangle(xy=(1.6, 0), width=0.8, height=0.225002, angle=0)
Rectangle(xy=(2.6, 0), width=0.8, height=0.639457, angle=0)
Rectangle(xy=(3.6, 0), width=0.8, height=0.463923, angle=0)
Rectangle(xy=(4.6, 0), width=0.8, height=0.865994, angle=0)
Rectangle(xy=(5.6, 0), width=0.8, height=0.269864, angle=0)
Rectangle(xy=(6.6, 0), width=0.8, height=0.834427, angle=0)
Rectangle(xy=(7.6, 0), width=0.8, height=0.79638, angle=0)
Rectangle(xy=(8.6, 0), width=0.8, height=0.564809, angle=0)
Spine
Spine
Spine
Spine
Text(0.5, 0, '')
Text(1, 0, '')
Line2D()
Line2D()
Line2D((0, 0), (0, 1))
Text(0, 0, '')
Text(0, 1, '')
Line2D()
Line2D()
Line2D((0, 0), (0, 1))
Text(0, 0, '')
Text(0, 1, '')
Line2D()
Line2D()
Line2D((0, 0), (0, 1))
Text(0, 0, '')
Text(0, 1, '')
Line2D()
Line2D()
Line2D((0, 0), (0, 1))
Text(0, 0, '')
Text(0, 1, '')
Line2D()
Line2D()
Line2D((0, 0), (0, 1))
Text(0, 0, '')
Text(0, 1, '')
Line2D()
Line2D()
Line2D((0, 0), (0, 1))
Text(0, 0, '')
Text(0, 1, '')
Line2D()
Line2D()
Line2D((0, 0), (0, 1))
Text(0, 0, '')
Text(0, 1, '')
XAxis(80.0, 52.8)
Text(0, 0.5, '')
Text(0, 0.5, '')
Line2D()
Line2D()
Line2D((0, 0), (1, 0))
Text(0, 0, '')
Text(1, 0, '')
Line2D()
Line2D()
Line2D((0, 0), (1, 0))
Text(0, 0, '')
Text(1, 0, '')
Line2D()
Line2D()
Line2D((0, 0), (1, 0))
Text(0, 0, '')
Text(1, 0, '')
Line2D()
Line2D()
Line2D((0, 0), (1, 0))
Text(0, 0, '')
Text(1, 0, '')
Line2D()
Line2D()
Line2D((0, 0), (1, 0))
Text(0, 0, '')
Text(1, 0, '')
Line2D()
Line2D()
Line2D((0, 0), (1, 0))
Text(0, 0, '')
Text(1, 0, '')
YAxis(80.0, 52.8)
Text(0.5, 1.0, '')
Text(0.0, 1.0, '')
Text(1.0, 1.0, '')
Rectangle(xy=(0, 0), width=1, height=1, angle=0)
AxesSubplot(0.125, 0.11;0.775x0.77)
示例 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)
print("Value return : \n", *list(ax.findobj()),
sep ="\n")
fig.suptitle('matplotlib.axes.Axes.findobj()\
function Example', fontweight ="bold")
plt.show()
输出： _in_Python_1.jpg)
Value return :
Circle(xy=(0.5, 0.5), radius=0.25)
Line2D(_line0)
Spine
Spine
Spine
Spine
Text(0.5, 0, '')
Text(1, 0, '')
Line2D()
Line2D()
Line2D((0, 0), (0, 1))
Text(0, 0, '')
Text(0, 1, '')
Line2D()
Line2D()
Line2D((0, 0), (0, 1))
Text(0, 0, '')
Text(0, 1, '')
Line2D()
Line2D()
Line2D((0, 0), (0, 1))
Text(0, 0, '')
Text(0, 1, '')
Line2D()
Line2D()
Line2D((0, 0), (0, 1))
Text(0, 0, '')
Text(0, 1, '')
Line2D()
Line2D()
Line2D((0, 0), (0, 1))
Text(0, 0, '')
Text(0, 1, '')
Line2D()
Line2D()
Line2D((0, 0), (0, 1))
Text(0, 0, '')
Text(0, 1, '')
Line2D()
Line2D()
Line2D((0, 0), (0, 1))
Text(0, 0, '')
Text(0, 1, '')
Line2D()
Line2D()
Line2D((0, 0), (0, 1))
Text(0, 0, '')
Text(0, 1, '')
XAxis(80.0, 52.8)
Text(0, 0.5, '')
Text(0, 0.5, '')
Line2D()
Line2D()
Line2D((0, 0), (1, 0))
Text(0, 0, '')
Text(1, 0, '')
Line2D()
Line2D()
Line2D((0, 0), (1, 0))
Text(0, 0, '')
Text(1, 0, '')
Line2D()
Line2D()
Line2D((0, 0), (1, 0))
Text(0, 0, '')
Text(1, 0, '')
Line2D()
Line2D()
Line2D((0, 0), (1, 0))
Text(0, 0, '')
Text(1, 0, '')
Line2D()
Line2D()
Line2D((0, 0), (1, 0))
Text(0, 0, '')
Text(1, 0, '')
Line2D()
Line2D()
Line2D((0, 0), (1, 0))
Text(0, 0, '')
Text(1, 0, '')
Line2D()
Line2D()
Line2D((0, 0), (1, 0))
Text(0, 0, '')
Text(1, 0, '')
Line2D()
Line2D()
Line2D((0, 0), (1, 0))
Text(0, 0, '')
Text(1, 0, '')
YAxis(80.0, 52.8)
Text(0.5, 1.0, '')
Text(0.0, 1.0, '')
Text(1.0, 1.0, '')
Rectangle(xy=(0, 0), width=1, height=1, angle=0)
AxesSubplot(0.125, 0.11;0.775x0.77)