title: Plotly: How to filter a pandas dataframe using a dropdown menu?
body: <p>I have a dataframe and using <code>plotly</code> I want to visualise the data. I have the following code</p>
  
  <pre><code>fig = px.line(df, x="row_num", y="audienceWatchRatio", color='vid_id')
  fig.show() 
  </code></pre>
  
  <p><a href="https://i.stack.imgur.com/GrGx5.jpg" rel="noreferrer"><img src="https://i.stack.imgur.com/GrGx5.jpg" alt="enter image description here"></a></p>
  
  <p>It's really messy, so I want a drop-down menu where the user can just select the <code>vid_id</code> and it only shows the 1 graph. </p>