From the demo, this page does tag history in a chart:
http://demo.inductiveautomation.com/data/perspective/client/OnlineDemo/feature/history/charts
We just posted the demo project files. Hopefully taking a look at them will provide a little guidance.
Note that we have two major things that we're working on improving in this area:
- Tag History Binding UI (you won't need to create objects like you do today)
- Improving chart components
This will mean that the examples will be obsolete before our final release. However, if you wanted to do this in the mean time, you can certainly follow what we did there for the demo.