When comparing Flot vs Google Charts, the Slant community recommends Google Charts for most people. In the question“What are the best JavaScript charting libraries? ” Google Charts is ranked 14th while Flot is ranked 16th. The most important reason people chose Google Charts is:
Google Charts has a large selection of chart types to get started with and have up in running in very little time. It uses sensible defaults, but has flexible options to allow for customization when needed. Better than most other free to use Chart APIs and has great documentation provided by Google.
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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 Easy to use
Google Charts has a large selection of chart types to get started with and have up in running in very little time. It uses sensible defaults, but has flexible options to allow for customization when needed. Better than most other free to use Chart APIs and has great documentation provided by Google.
Pro Supports multiple Y axes
Important for trend correlation, eg. comparing number of clicks to sale amounts. Not same scales / units.
Cons
Con Limited choice of charts
Currently, Flot supports a limited number of chart types (lines, bars, filled area and point chart).
Con Cannot self-host
Google does not allow you to save or host the code yourself.