d3.nest() key and values conversion to name and children

Question

I am working on creating a Treemap from a csv file. The data in the csv file is hierarchical, as a result I used d3.nest().

However, the resulting JSON

Answer 1

Hey guys I think I found a fairly simple solution. I accomplished a very nice nesting of a large dataset (400,000 rows) for a hierarchical bar chart in a very streamline way. It utilizes the Underscore library and an additional function _.nest. Simply download and include the two libraries necessary

"underscore-min.js" "underscore.nest.js"

Then use the _.nest function to create your structure. Here's my line:

var newdata = _.nest(data, ["Material", "StudyName"]);

"Material" and "StudyName" are the columns I want to group my structure to.

There are other options to use this function if you need to accomplish more things but I will leave it like this