How to control the igraph plot layout with Fixed Positions?

Question

I am trying to draw a network visualization to resemble a flow diagram. I\'m fairly close with the following code, but I have a couple questions:

1. Is this the

Answer 1

A less complicated method than the above if you want to assign the node locations yourself is to add columns labelled x and y in your datasheet with the x and y coordinates for the respective nodes in those columns. e.g.

library('igraph')
nodes <- c('a','b','c','d')
x <- c(0,1,2,3)
y <- c(0,1,2,3)
from <- c('a','b','c')
to <- c('b','c','d')
NodeList <- data.frame(nodes, x ,y)
EdgeList <- data.frame(from, to)
a<- graph_from_data_frame(vertices = NodeList, d= EdgeList, directed = FALSE)
plot(a)