Matplotlib.artist.Artist.set_gid() in Python

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Matplotlib is a library in Python and it is numerical – mathematical extension for NumPy library. The Artist class contains Abstract base class for objects that render into a FigureCanvas. All visible elements in a figure are subclasses of Artist.

Matplotlib.artist.Artist.set_gid() Method

The set_gid() method in artist module of matplotlib library is used to set the (group) id for the artist.

Syntax: Artist.set_gid(self, gid)

Parameters: This method accepts only one parameters.

gid: This parameter is the string given as gid.

Returns: This method does not return any value.

Below examples illustrate the matplotlib.artist.Artist.set_gid() function in matplotlib:

Example 1:

# Implementation of matplotlib function 
from matplotlib.artist import Artist 
import numpy as np 
import matplotlib.pyplot as plt 
  
  
y, x = np.mgrid[:5, 1:6] 
poly_coords = [ 
    (0.25, 2.75), (3.25, 2.75), 
    (2.25, 0.75), (0.25, 0.75) 
] 
  
fig, ax = plt.subplots() 
  
cells = ax.plot(x, y, x + y, color='green') 
ax.add_patch( 
    plt.Polygon(poly_coords, 
                color='forestgreen', 
                alpha=0.5) 
) 
  
ax.margins(x=0.1, y=0.05) 
ax.set_aspect('equal') 
  
for i, t in enumerate(ax.patches): 
    Artist.set_gid(t, 'patch_% d' % i) 
  
fig.suptitle("""matplotlib.artist.Artist.set_gid() 
function Example""", fontweight="bold") 
  
plt.show() 

Output:

Example 2:

# Implementation of matplotlib function 
from matplotlib.artist import Artist  
import numpy as np  
import matplotlib.pyplot as plt  
    
     
fig, ax = plt.subplots()  
    
circle = plt.Circle((0, 0), 5, fc ='blue')  
rect = plt.Rectangle((-5, 10), 10, 5, fc ='green')  
    
ax.add_patch(circle)  
ax.add_patch(rect)  
    
circle_tip = ax.annotate('This is a blue circle.',  
            xy =(0, 0),  
            xytext =(30, -30),  
            textcoords ='offset points',  
            color ='w',  
            ha ='left',  
            bbox = dict(boxstyle ='round, pad =.5',   
                        fc =(.1, .1, .1, .92),  
                        ec =(1., 1., 1.),   
                        lw = 1,  
                        zorder = 1),  
            )  
    
rect_tip = ax.annotate('This is a green rectangle.',  
            xy =(-5, 10),  
            xytext =(30, 40),  
            textcoords ='offset points',  
            color ='w',  
            ha ='left',  
            bbox = dict(boxstyle ='round, pad =.5',  
                        fc =(.1, .1, .1, .92),   
                        ec =(1., 1., 1.),   
                        lw = 1,  
                        zorder = 1),  
            )  
    
for i, t in enumerate(ax.patches):  
    Artist.set_gid(t, 'patch_% d'% i)  
    
for i, t in enumerate(ax.texts):  
    Artist.set_gid(t, 'tooltip_% d'% i)  
    
ax.set_xlim(-30, 30)  
ax.set_ylim(-30, 30)  
ax.set_aspect('equal')  
  
fig.suptitle("""matplotlib.artist.Artist.set_gid() 
function Example""", fontweight="bold") 
  
plt.show()