When comparing Viser vs Flot, the Slant community recommends Flot for most people. In the question“What are the best JavaScript charting libraries? ” Flot is ranked 16th while Viser is ranked 22nd. 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
Cons
Con Limited choice of charts
Currently, Flot supports a limited number of chart types (lines, bars, filled area and point chart).