Radio buttons let the user choose only one option between multiple options. These buttons are arranged in groups of two or more with a list of circular dots. For the radio buttons to remain responsive you must keep a reference to this object. We connect the RadioButtons with the on_clicked method to make it responsive.
Syntax:
matplotlib.widgets.RadioButtons(ax, labels, active=0, activecolor=’blue’)
Parameters:
- ax: The axes to which the radio buttons add.
- labels: button labels(list of str).
- active: Index of the initially selected button.
- activecolor: Color of the selected button.
Below are various examples that depict how to create and use radio buttons using matplotlib library.
Example 1:
Python3
# import required modules as numpy,# matplotlib and radiobutton widgetimport numpy as npimport matplotlib.pyplot as pltfrom matplotlib.widgets import RadioButtons# x and y-coordinates for graph creationx = np.linspace(0, 2*np.pi, 200)y = np.cos(x**2)# Creating subplot and adjusting subplotfig, ax = plt.subplots()l, = ax.plot(x, y, color='yellow')plt.subplots_adjust(left=0.4)ax.set_title('Plot with RadioButtons', fontsize=18)# sub-plot for radio button with # left, bottom, width, height valuesrax = plt.axes([0.1, 0.15, 0.2, 0.2])radio_button = RadioButtons(rax, ('yellow', 'red', 'blue', 'green'))# function performed on switching the # radiobuttonsdef colorfunc(label): l.set_color(label) plt.draw()radio_button.on_clicked(colorfunc)plt.show() |
Output:
Example 2:
Python3
import numpy as npimport matplotlib.pyplot as pltfrom matplotlib.widgets import RadioButtons# plotting between the interval -π and πx = np.linspace(-np.pi, np.pi)# trigonometric functions to plotp = 2*np.sin(x)q = np.sin(x)r = np.cos(x)s = 2*np.cos(x)fig, ax = plt.subplots()l, = ax.plot(x, p, lw=3, color='green')plt.subplots_adjust(left=0.3)rax = plt.axes([0.05, 0.7, 0.15, 0.2])radio = RadioButtons(rax, ('2sin(x)', 'sin(x)', 'cos(x)', '2cos(x)'))# function performed on clicking the radio buttonsdef sinefunc(label): sindict = {'2sin(x)': p, 'sin(x)': q, 'cos(x)': r, '2cos(x)': s} data = sindict[label] l.set_ydata(data) plt.draw()radio.on_clicked(sinefunc)# plot gridax.grid()plt.show() |
Output:
Example 3:
Python3
import numpy as npimport matplotlib.pyplot as pltfrom matplotlib.widgets import RadioButtons# plotting between the interval -π and πx = np.linspace(-np.pi, np.pi)# trigonometric functions to plotp = 2*np.sin(x)q = np.sin(x)r = np.cos(x)s = 2*np.cos(x)fig, ax = plt.subplots()l, = ax.plot(x, p, lw=3, color='red')plt.subplots_adjust(left=0.3)rax = plt.axes([0.05, 0.7, 0.15, 0.2])radio = RadioButtons(rax, ('2sin(x)', 'sin(x)', 'cos(x)', '2cos(x)'))# function performed on clicking the radio buttonsdef sinefunc(label): sindict = {'2sin(x)': p, 'sin(x)': q, 'cos(x)': r, '2cos(x)': s} data = sindict[label] l.set_ydata(data) plt.draw()radio.on_clicked(sinefunc)# plot gridax.grid()# x and y-coordinates for graph creationx = np.linspace(0, 2*np.pi, 200)y = np.cos(x**2)# sub-plot for radio button with # left, bottom, width, height valuesrax2 = plt.axes([0.05, 0.15, 0.15, 0.2])radio_button = RadioButtons(rax2, ('red', 'blue', 'green'))# function performed on switching radiobuttonsdef colorfunc(label2): l.set_color(label2) plt.draw()radio_button.on_clicked(colorfunc)plt.show() |
Output:
