jqPlot

-It is free. -It allows us to plot and draw charts and graphs. -It is easy to use. -Quite impressive UI.

I used jqplot in a great health project public in Brazil, and it met my expectations perfectly, it is easy to implement getting a Json, and integrates easily with Angular 1.x and 2+, all the development was much easier using this lib . The graphs were generated at runtime by the user, who passed the parameters to set up his reports. With Jqplot all this was possible in a simple and fast way

1. Multiple types of plotting possible in the library. 2. JQPlot is flexible enough to support all kinds of devices like desktop mobile and laptops. 3. It uses existing JQuery library for reference, so works well in hybrid kind of architecture and supports older browsers as well. 4. It is quite smooth even while plotting large amount of dataset on the browser. 5. Additionally the library supports labeling an adding tool-tips to the plotted graphs. 6. Comprehensive documents to know about different types of plots that can be done using this library.