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JavaScript

A general question about a specific content in the D3.js course.

I'm thinking of signing up for the course the d3.js course, however I need to know a thing about it. I don't know anything about data visualization, will work my way through this course. But my question is, does the curriculum here teach how to visualize data with say, 19 variables? I specifically need to learn the way of visualizing data with multiple variables (19 in my case). I know this is a super noob question. But asking here just to make sure I'll get what I want specifically from the course(apart from the other basics of data visualization).

Thanks!