Chord diagram | the R Graph Gallery

Introduction to circlize

The circlize package allows to build all kinds of circular chart. This first section introduces the way it works, step by step. Chord diagram are described in the following section, but a basic understanding of the library is necessary at first.

Introduction to circlize

An introduction to the R circlize package: how to initalize a circular graph and fill it with a scatterplot.

Customization

Apply customization to the circular chart: color, background, track height and more.

Chart types

Learn how to use other chart types like line chart, barcharts, vertical ablines and more.

Stack tracks

You can stack several tracks to show several series one on top of each other.

Several in figure

How to display several on same window.

Select a section

Select a section of the circular chart only.

Static chord diagram

The circlize package also offers functions to build chord diagrams. Basically, it allows to add arcs between nodes to show flows. The examples below will guide you through their usage. The circos.links() function builds connection one by one, when chordDiagram() plot a whole dataset in one shot.

Introduction to arcs

How to use circos.arc to draw arcs between entities, resulting in a chord diagram.

Basic chord diagram

How to build a basic chord diagram from an edge list or an adjacency matrix with R and the circlize package.

Customized chord diagram

Build links manually to allow more flexiility on the display.

Migration

Change node features to display one more level of information on the chart

Interactivity

The chorddiag package is an htmlwidget: it automatically builds interactive charts. On the chart below, hovering a group or a connection will highlight the related flow and give additional information.

Note: The example below comes directly from the chorddiagdocumentation. Thanks to Mattflor for developping such a nice package.

How to export to .png Chart code