Alternative to Google Visualization's Annotated Timeline? (graphing library)
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.
Answer
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.