With the default settings, the annotations do not look great; the annotations overlap with our data points. To fix this, we can apply an offset like so:


        
        
            
                
                
                    x = [1,2,3]
y = [4,5,6]
plt.scatter([1,2,3], [4,5,6])
for i in range(len(x)):
    plt.annotate(i, (x[i], y[i]), xytext=(5, 5), textcoords="offset pixels")

Here, we are setting two additional parameters xytext and textcoords. The textcoords indicates that we want to apply the offset in units of pixels, and the xytext indicates how much we want to offset the annotations by. The xytext takes in a tuple, with the first item being the horizontal offset, and second being the vertical offset.

The output is as follows:

Changing the font-size

To change the font-size of the annotation, specify the fontsize argument:


        
        
            
                
                
                    import matplotlib.pyplot as plt
x = [1,2,3]
y = [4,5,6]
plt.scatter([1,2,3], [4,5,6])
for i in range(len(x)):
    plt.annotate(i, (x[i], y[i]), fontsize=20)

This produces the following plot:

Published by Isshin Inada

Edited by 0 others

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