title: Data selection using a button
body: <p>I would like to create a button on a Jupyter Notebook in order to replace the if statement used in the following code:</p>
  
  <pre><code>from ipywidgets import interact
  import ipywidgets as widgets
  import numpy as np
  import pandas as pd
  import matplotlib.pyplot as plt
  from IPython.display import display
  import scipy as sci
  
  # I create two dataset
  x = np.linspace(0, 2*np.pi, 2000)
  y1=np.sin(2*x)
  y2=np.sin(4*x)
  y3=np.sin(8*x)
  
  f1=np.exp(-x**2)
  f2=np.exp(-2*x**2)
  f3=np.exp(-3*x**2)
  
  ms=[y1,y2,y3]
  mt=[f1,f2,f3]
  ms=np.transpose(ms)
  mt=np.transpose(mt)
  dataset_1=pd.DataFrame(ms)
  dataset_2=pd.DataFrame(mt)
  
  control=1 # Selection parameter used in the if condition
  
  
  # This is the condition that I want to replace by a button
  if control==1: 
      data=dataset_1
      data.plot()
      plt.show()
  
  elif control==0:
      data=dataset_2
      data.plot()
      plt.show() 
  </code></pre>
  
  <p>Here I created two dataset composed by three sines and gaussians respectively.
  I wonder if it is possible to use a radio-button like this:</p>
  
  <pre><code>widgets.RadioButtons(
  options=['dataset 1', 'dataset 2'],
  description='Switching:',
  disabled=False
  )
  </code></pre>