title: plt.bar (matplotlib in python) does not make bars
body: <p>I am trying to make a bar plot. I have count data that I have distributed into bins of size 1000 (say). On the x-axis, I have the bin coordinate, i.e., -3000, -2000, ..., 0, 1000, 2000, 3000 (in that form).</p>
  
  <p>Now when I say plt.bar(x-coord, y-coord), I only get vertical lines. </p>
  
  <p>How do I make sure I get bars? I did try playing around the width coordinate, but had no luck.</p>
  
  <p>Thank you in advance for answering my question.</p>