title: R ggplot2 autoplot() function. What's wrong?
body: <p>I have a dataset "bc" with 2285 observations two variables: "Date" and "Price".</p>
  
  <pre><code> 'data.frame':  2285 obs. of  2 variables:
    $ Date : Date, format: "2017-12-14" "2017-12-13" ...
    $ Price: num  16234 16250 16650 16470 14691 ...
  </code></pre>
  
  <p>I tried to create a time series object as: </p>
  
  <pre><code>  tsbc &lt;- ts(bc)
  </code></pre>
  
  <p>Then, I used: </p>
  
  <pre><code>  autoplot(tsbc)
  </code></pre>
  
  <p>And I get figure below:
  <a href="https://i.stack.imgur.com/lTw7d.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/lTw7d.jpg" alt="Plot-Image"></a>
  However, the plot is not how it is supposed to be. Could you help me understand why?</p>