# 总方针:是什么?从哪里来?要到哪里去?
# 一、是什么
D3全名(Data-Driven Documents), 作者Mike Bostock
非常幸运地是:D3已经拆分为了一个个模块
d3 的前身 protovis (https://vis.stanford.edu/papers/d3 (opens new window))
https://mbostock.github.io/protovis (opens new window)
# why svg?
# use d3.js to make a complex project
# d3-scale
# five part
dataviz
animation
analysis
geo
data utilities
DOM Utilities(the jquery parts)