LIBD3: Stata module providing D3js Mata library

libd3 is a mata implementation of the D3.js library. The library aims to implement the D3js methods as consistently with the original library as possible. Some noticeable differences are the object oriented approach taken by the library which allows users to "undo" a previous method call, the use of explicit constructors/initializers, and built-in methods for "pretty printing" the resulting javascript (e.g., indenting and new line insertion in a manner that is typical for javascript). The .ado wrapper included with the package is used to compile the library locally on your machine, making it easier for end users to further extend/customize the underlying source and maintain it across machines. Using this approach helps to make reusable components (e.g., compose a Mata function that generates all of the JS necessary to construct the graph). You can find example use cases at https://github.com/wbuchanan/d3mata-examples. Users of this package will also likely want to consider installing the libhtml package to compose the HTML document in which the visualization would be embedded and the jsonio package to serialize their data to a JSON object that will retain the metadata from their dataset. After installing, run the command libd3, ml rep qui.