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In this article, We are going to see how to add text inside the plot in Matplotlib. The matplotlib.pyplot.text[] function is used to add text inside the plot. The syntax adds text at an arbitrary location of the axes. It also supports mathematical expressions.
Syntax: matplotlib.pyplot.text[x, y, s, fontdict=None, **kwargs]
Parameters:
- where x, y – coordinates
- s – text to be added inside the plot[string]
- fontdict – optional parameter. It overrides the default text properties
- **kwargs – text properties
Example 1: Adding mathematical equations inside the plot.
Python3
import matplotlib.pyplot as plt
import numpy as np
x = np.arange[-10, 10, 0.01]
y = x**2
plt.text[-5, 60, 'Parabola $Y = x^2$', fontsize =
22]
plt.plot[x, y, c='g']
plt.xlabel["X-axis", fontsize = 15]
plt.ylabel["Y-axis",fontsize = 15]
plt.show[]
Output:
Example 2: Adding rectangular box around the text by using the keyword ‘bbox’. bbox is a dictionary of Rectangle properties.
Python3
import matplotlib.pyplot as plt
import numpy as np
x = np.arange[-10, 10, 0.01]
y = x**2
plt.xlabel["X-axis", fontsize = 15]
plt.ylabel["Y-axis",fontsize = 15]
plt.text[-5, 60, 'Parabola $Y = x^2$', fontsize = 22,
bbox = dict[facecolor =
'red', alpha = 0.5]]
plt.plot[x, y, c = 'g']
plt.show[]
Output:
Example 3: Adding the text “Sine wave” inside the plot.
Python3
import matplotlib.pyplot as plt
import numpy as np
x =
np.arange[0, 10, 0.1]
y = np.sin[x]
plt.plot[x,y]
plt.text[3.5, 0.9, 'Sine wave', fontsize = 23]
plt.xlabel['X-axis', fontsize = 15]
plt.ylabel['Y-axis', fontsize = 15]
plt.show[]
Output:
Example 4: Using annotation along with text inside plot
Python3
import matplotlib.pyplot as plt
import numpy as np
x = ['Rani', 'Meena', 'Raju', 'Jhansi', 'Ram']
y =
[5, 7, 9, 2, 6]
plt.bar[x,y]
plt.text[3, 7, 'Student Marks',
fontsize = 18, color = 'g']
plt.xlabel['Students', fontsize = 15]
plt.ylabel['Marks', fontsize = 15]
plt.annotate['Highest scored', xy =
[2.4, 8],
fontsize = 16, xytext = [3, 9],
arrowprops = dict[facecolor = 'red'],
color = 'g']
plt.show[]
Output: