title: Scatter plot two feature vector set in same figure
body: <p>I want to plot two feature vector in scatter plot in same figure. I am doing PCA analysis from MNIST.</p>
  
  <p>Current Feature Vector lets call it <code>Elements</code> has 784 rows. </p>
  
  <pre><code>print Elements.shape
  (784,)
  </code></pre>
  
  <p>I want to plot <code>Elements[-20]</code> and <code>Elements[-19]</code> scatter plot in same figure and want to achieve something like below.</p>
  
  <p>I am struggling to add both elements into same plot with different color.</p>
  
  <p><code>plt.scatter(X[-20], X[-19], c= 'r')</code> yields only one color and no distinction of scattered value.</p>
  
  <p>As hightlighted below someof my data sets are overlapping and hence below solution from SO doesnt work. <a href="https://stackoverflow.com/questions/4270301/matplotlib-multiple-datasets-on-the-same-scatter-plot/47728146">SO solution</a></p>
  
  <p><a href="https://i.stack.imgur.com/I9BiK.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/I9BiK.png" alt="enter image description here"></a></p>
  
  <p>First 20 data elements of  X[-20] are as below.</p>
  
  <pre><code>0.00000000e+00  0.00000000e+00  0.00000000e+00  0.00000000e+00
    0.00000000e+00  0.00000000e+00  0.00000000e+00  0.00000000e+00
    0.00000000e+00  0.00000000e+00  0.00000000e+00  0.00000000e+00
    2.84343259e-03  6.22613687e-03 -7.95592208e-15 -1.69063344e-14
    1.34798763e-14  0.00000000e+00  6.36473767e-14 -3.18236883e-14
  </code></pre>