Dojo charting Tooltips

It took me a while to get the tooltips working on my chart.  There was no definitive answer anywhere.

What I found is that in dojo 1.6.1, you need to do the following:

1. dojo.require("dojox.charting.action2d.Tooltip");
3. chart.addSeries("seriesName", chartData, {plot : "default"}); // Here you have to make sure chartData is an array of objects like this [{y: 1234, tooltip: "Tooltip text 1"},{y: 2000, tooltip: "Tooltip text 2"}]
4. tooltip = new dojox.charting.action2d.Tooltip(chart, "default");  // Where default is an already defined plot and chart is also already defined.
5. chart.render(); // You MUST declare the tooltip before adding the chart.

I read some stuff out on the net that you have to create a div or add dojoTheme: true to your dojoConfig.  From what I did, neither of these are required.

I also read that I have to use a theme.  I am already including and using claro, so maybe that requirement was already met in my app.

Good luck.  I hope this helps someone.