When comparing D3.js vs Livegap charts, the Slant community recommends D3.js for most people. In the question“What are the best JavaScript charting libraries? ” D3.js is ranked 2nd while Livegap charts is ranked 15th. The most important reason people chose D3.js is:
D3.js is a very popular tool with an active community, resulting in plenty of learning resources and fast responses to questions.
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Pros
Pro Large community
D3.js is a very popular tool with an active community, resulting in plenty of learning resources and fast responses to questions.
Pro Huge number of examples online
Most of the examples provided are by the author, but there's also a great community writing plugins and more examples.
Pro Doesn't require a proprietary framework
D3's emphasis on web standards gives you the full capabilities of modern browsers without tying yourself to a proprietary framework.
Pro Versatile library for manipulating data on the DOM
Pro Very flexible join paradigm
Can be tricky at first, but once learned, data manipulation and binding can easily generate complex visualizations for massive amounts of data.
Pro Great for highly interactive scenes
D3.js offers incredible levels of interactivity.
Pro Backwards compatible
D3.js is intended for modern browsers, so supports IE9 and above (IE8 with an additional library) as well as all the other modern browsers.
Pro Free
Tool to easily create beautiful chart from any data then save as image or animated HTML Charts
Pro Charts can be exported to multiple formats
Charts can be exported to images or HTML.
Pro Can be opened from the browser
The tool is online and can be used from a web browser, no application is needed.
Cons
Con Steep learning curve
The complexity and flexibility of D3.js results in it being a time-consuming tool to learn for many users.
D3 is incredibly flexible; probably more so than any other JavaScript visualization library at the time of this posting. With that flexibility comes increased complexity. If you just want to create some quick charts you will get results faster with something else.
Con "Selections" are elegant, but somewhat hard to grok
Selections are core to working with D3 beyond the basics. They're powerful and useful, but require new developers to get up to speed (e.g. set aside 30m to read and digest: https://github.com/mbostock/d3/wiki/Selections) and if used in the context of a larger application will result in a portion of the code using different patterns than the rest, requiring a translation layer in between.

Con No candlestick charts
Con No gantt chart
