Is there any alternative to Google’s Annotated Timeline Visualization API?
There’s some bugs in the Annotated Timeline, and it doesn’t appear they will be addressed.
Also it is a Flash based chart. A Canvas+Javascript implementation would be more portable.
The qualities that make the Annotated Timeline valuable (as opposed to every other charting library i’ve found so far) are:
- supports multiple lines
- zooming; to drill in and out of a date range
- panning back and forth through time
- supports thousands of data points
- ability to be fed new data on the fly
As far as i can tell Google’s Annotated Timeline is the only interactive line graph library.
Dygraphs should do exactly what you want, and is a full js implementation. It’s free, and already integrates with gviz (sample here), so you should barely need to change anything. It also has a bunch of other useful functionality not found on other gviz charts (like rolling average calculation).
Hope that helps.