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The Charm City Circleator–or Circleator for short–is a Perl-based visualization tool developed at the Institute for Genome Sciences in the University of Maryland’s School of Medicine. Circleator produces circular plots of genome-associated data, like this one:

Sample Circleator image

Common uses of the tool include:

Getting Started

Check out the Installation Guide, the detailed README on GitHub, and the Documentation for more information. There’s also a Google Group for Circleator questions and discussion.


This product includes color specifications and designs developed by Cynthia Brewer (http://colorbrewer.org).


An Applications Note describing Circleator has been published in Bioinformatics:

Crabtree, J., Agrawal, S., Mahurkar, A., Myers, G.S., Rasko, D.A., White, O. (2014) Circleator: flexible circular visualization of genome-associated data with BioPerl and SVG. Bioinformatics, 10.1093/bioinformatics/btu505.

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