Matplotlib.axes.Axes.set_ymargin() in Python
Last Updated :
02 Jul, 2021
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.set_ymargin() Function
The Axes.set_ymargin() function in axes module of matplotlib library is used to set padding of Y data limits prior to autoscaling.
Syntax: Axes.set_ymargin(self, m)
Parameters: This method accepts the following parameters.
- m: This parameter is used to specific margin values for the y-axis.
Return value: This method does not return any value.
Below examples illustrate the matplotlib.axes.Axes.set_ymargin() function in matplotlib.axes:
Example 1:
Python3
import numpy as np
import matplotlib.pyplot as plt
from matplotlib.widgets import Slider, Button, RadioButtons
fig, (ax, ax1) = plt.subplots( 1 , 2 )
plt.subplots_adjust(bottom = 0.25 )
t = np.arange( 0.0 , 1.0 , 0.001 )
a0 = 5
f0 = 3
delta_f = 5.0
s = a0 * np.sin( 2 * np.pi * f0 * t)
ax.plot(t, s, lw = 2 , color = 'green' )
ax1.plot(t, s, lw = 2 , color = 'green' )
ax1.set_ymargin( 0.5 )
ax.set_title( "Without set_ymargin() Function" )
ax1.set_title( "With set_ymargin value = 0.5" )
fig.suptitle('matplotlib.axes.Axes.set_ymargin() \
function Example\n', fontweight = "bold" )
fig.canvas.draw()
plt.show()
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Output:
Example 2:
Python3
import numpy as np
import matplotlib.pyplot as plt
t = np.arange( 0 , 3 , 1 )
t1 = np.cos(np.pi * t) + np.sin(np.pi * t)
fig, [ax1, ax2, ax3] = plt.subplots(nrows = 3 )
ax1.plot(t1, color = "green" )
ax1.text( 0.75 , 0.65 , 'Original window' )
ax2.set_ymargin( 2 )
ax2.plot(t1, color = "green" )
ax2.text( 0.8 , 3 , 'Zoomed out' )
ax3.set_ymargin( - 0.45 )
ax3.plot(t1, color = "green" )
ax3.text( 0.8 , 0.05 , 'Zoomed in' )
fig.suptitle('matplotlib.axes.Axes.set_ymargin() \
function Example\n', fontweight = "bold" )
fig.canvas.draw()
plt.show()
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Output:
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