When comparing Flot vs d3fc, the Slant community recommends Flot for most people. In the question“What are the best open source JavaScript charting libraries?” Flot is ranked 6th while d3fc is ranked 11th. The most important reason people chose Flot is:
Flot provides detailed and well organized [documentation](https://github.com/flot/flot/blob/master/API.md) that includes plenty of code examples you're free to use. It's fast to customize and add functionality, partially due to its use of jQuery.
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Pros
Pro Easy to use
Flot provides detailed and well organized documentation that includes plenty of code examples you're free to use. It's fast to customize and add functionality, partially due to its use of jQuery.
Pro Real-time updates
Flot provides live updating with a customizable update time.
Pro Drag to select
Pro Simple configuration
Pro Built using D3v4
d3fc is built using the latest D3v4, and has the same modular architecture. It is currently made up of 17 sub-projects.
Pro Complements and extends D3
d3fc provides a number of higher-order D3 components that make it easier to build charts. With d3fc you can create series, annotations, samplers and layouts using the familiar D3 data-join pattern.
Cons
Con Limited choice of charts
Currently, Flot supports a limited number of chart types (lines, bars, filled area and point chart).