When comparing Metrics Graphics vs Flot, 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 Metrics Graphics is ranked 9th. 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 Built on D3
All the power and flexibility of D3.js.
Pro Declarative interface
Declare the type of chart, the x and y variables, and other chart properties. No unnecessary manipulation of data objects into separate arrays for each axis.
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
Cons
Con Limited choice of charts
Currently, Flot supports a limited number of chart types (lines, bars, filled area and point chart).