title: Google Charts Annotated Time Line - adjust y-axis on zoom
body: <p>I am using the <a href="http://code.google.com/apis/ajax/playground/?type=visualization#annotated_time_line" rel="nofollow noreferrer">annotated time line chart</a> in google charts API.  I have a long time line of data (20 years) and range of the data goes from about 0 to 900,000 (see picture)  If you zoom on the most recent year, the max from this set is only about 400,000.  So when we zoom in, I don't need the y-axis to go all the way to 900,000, but only to 400,000.  This way the chart would be easier to read.</p>
  
  <p>What I would like to achieve is the chart to re-adjust the maximum vertical axis value every time I adjust the zoom.  </p>
  
  <p><img src="https://i.stack.imgur.com/Ui8Lb.png" alt="enter image description here"></p>
  
  <p>Zoom in on most recent year:</p>
  
  <p><img src="https://i.stack.imgur.com/ZQID1.png" alt="enter image description here"></p>
  
  <p>Before I start hacking my way through this, does anyone know a good way to do this?</p>
  
  <p>Thanks!</p>