A library for building time series graphs on a large amount of data?

Question

Python

Recommend a C/C++/Python library for making time series graphs as easy as dygraphs does , but much faster. The volume of data is large - millions of records, time along the X axis - accurate to the millisecond.

Answer 1

Here is what was found: www.humblesoftware.com/envision
And here are many more interesting libraries: selection.datavisualization.ch/