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Drawing Circles and Ellipses in R

Whether you use circles as visual encodings or as a way to highlight areas of a plot, there are functions at your disposal.

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About the Author

Nathan Yau is a statistician who works primarily with visualization. He earned his PhD in statistics from UCLA, is the author of two best-selling books — Data Points and Visualize This — and runs FlowingData. Introvert. Likes food. Likes beer.