This course has been updated! We now recommend you take the Introduction to Data Visualization with d3.js v4 course.

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The "Creating a Rendering Function" Lesson is part of the full, Interactive Data Visualization with D3.js course featured in this preview video. Here's what you'd learn in this lesson:

A better method for updating the visual states of the charts is to add an initializing function and move all rendering to an update function. Ian also answers a questions about throttling the visual updates.

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