The symmetrise function creates an undirected network from an edgelist.

It has two options:

• edgelist: the input dataset
• method: the method used to decide the weight of the undirected edge
• "MAX" sets the weight to the maximum of the weight(s) of the arc(s)
• "MIN" sets the weight to the minimumof the weight(s) of the arc(s)
• "AMEAN" sets the weight to the average (arithmetic mean) of the weight(s) of the arc(s)
• "SUM" sets the weight to the sum of the weight(s) of the arc(s)
• "PROD" sets the weight to the product of the weight(s) of the arc(s)
• "DIFF" sets the weight to the absolute difference between the weight(s) of the arc(s)

Example: Sample data

## Load tnet
library(tnet) 

## Sample data
sample <- rbind(
c(1,2,2),
c(1,3,2),
c(2,1,4),
c(2,3,4),
c(2,4,1),
c(2,5,2),
c(3,1,2),
c(3,2,4),
c(5,2,2),
c(5,6,1))

## Run programme
symmetrise(sample, method="MAX")