What is the use of connector in circos

This article will explain in detail what is the use of connector in circos. The editor thinks it is very practical, so I share it with you for reference. I hope you can get something after reading this article.

Connector is used to show the relationship between two locations on the genome, connecting the two locations through a set of broken lines, as shown in the following example

The broken line region near the chromosome is connector. As you can see, the connector is also displayed through a ring area, the starting position of the connection is on the inner diameter of the ring, and the ending position is on the outer diameter of the ring.

The configuration file is written as follows

First, take a look at the data content defined in file.

In file, each row defines a line. The first column is the name of the chromosome. The second column and the third column represent the starting and ending positions of the line, respectively. The starting point is on R0 and the ending point is on R1. The diagram is as follows

Connector has few attributes. R0 and R1 define the inner and outer diameters of the ring and determine the position of connector on the graph; thickness defines the thickness of the connection, and color defines the color of the connection.

The shape of the wire is controlled by the connetor_dim property, and the value of this value is list, which is made up of five numeric values.

Connector_dims = 0.05, 0.15, 0.6, 0.1, 0.1.

These five values divide the distance between R0 and R1 into five regions, and the values represent the proportion of each region, so the sum of the five values must be 1, as shown below:

The use of connector is relatively simple, and the frequency in practical use is not high.

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