D3 What
is the full name (Data-Driven Documents), a driven data files
simply, is a JavaScript library, using it mainly used for data visualization.
D3 is an open source project, is the author of The New York Times engineer.
D3 need to learn what prior knowledge
HTML: HTML, used to set the page's content
CSS: Cascading Style Sheets, used to set the style pages
JavaScript: one kind of literal scripting language used to set the behavior of the page
DOM : document Object model, the content and structure of the document for modifying
the SVG: scalable vector graphics, for drawing graphics visualization
D3 learning curve
over the past few years I've been using D3, and use it to draw a variety of graphical curve. However, a problem is that, although I understand the basic concepts of D3, but I still difficult to do hundreds of times, my colleagues around me and I also feel the same way. Like most people, in many cases, we are all from the Internet to find a sample and then modify it as needed for the actual project.
If you make your own from scratch to write a chart, you probably will feel uneasy and tense:
In my opinion, D3.js provides a powerful visual components ability, but for the average person in terms of the learning curve has also been overstating, want to delve Fun D3.js you also need to have a more profound students basic skills for the job.
We all know that to draw Sankey diagram before, hierarchical TreeMap, sun drawing, two-way comparison chart and so on, first remove the data from the database, then the data is organized into graphical format supported is very strenuous, coupled with the need to write a lot the code to implement rendering components.
But do data visualization have a better solution, NBI-stop platform for analyzing large data visualization, deep integration of D3.js, Echarts, through their secondary packaging so that the platform can achieve zero coding, drag and drop formula capability data visualization can be realized.
NBI build large data visualization platform : rich component library, consisting of flexible layout mode, a drag operation 
prompted by the intelligent component, or drag the corresponding dimension of the corresponding column inscription can visualize, without coding, without calculation, through the right side of the property configuration, so that the graphics look more beautiful.
A few minutes to complete the production data report, you can save the whole network to view, easy to share, NBI large data visualization appeared greatly simplifies data visualization input costs.