Google Charts Annotated Time Line - adjust y-axis on zoom

Question

I am using the annotated time line chart 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.

What I would like to achieve is the chart to re-adjust the maximum vertical axis value every time I adjust the zoom.

Zoom in on most recent year:

Before I start hacking my way through this, does anyone know a good way to do this?

Thanks!

Answer 1

Use the scaleType configuration option. Specify value of maximized if you have one series. Specify allmaximized if you have more than one series. This snippet works on the code playground:

  var annotatedtimeline = new google.visualization.AnnotatedTimeLine(
      document.getElementById('visualization'));
  annotatedtimeline.draw(data, {'scaleType':'allmaximized'});