Matplotlib is a library in Python and it is numerical – mathematical extension for NumPy library. The Axes Class contains most of the figure elements: Axis, Tick, Line2D, Text, Polygon, etc., and sets the coordinate system. And the instances of Axes supports callbacks through a callbacks attribute.
matplotlib.axes.Axes.findobj() Function
The Axes.findobj() function in axes module of matplotlib library is used to find artist objects.
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).
Below examples illustrate the matplotlib.axes.Axes.findobj() function in matplotlib.axes:
Example 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() |
Output:
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)
Example 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() |
Output:
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)
