Plotting igraph nodes on a Cartesian plane

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1

Hi all,

I am trying to plot a graph on a Cartesian plane (Image 1 is the original graph). The graph has fixed number of nodes and the connections between nodes are constant. The graph is undirected.

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I managed to create the graph using igraph and plot in using ggraph() (see Image 2). I have included the code I used to plot it with ggraph. However, with the latest upgrade the ggraph() is unable to draw the plot.

Can you please suggest me a way to achieve (plotting on a Cartesian plane) the same in igraph? I am using R 4.0.3.

library(igraph)
library(tidyverse)
library(ggraph)

#Setting Node coordinates
V <- read.table(text = "x y
                2 1
                4 2
                4 4
                2 5
                6 4
                3 7
                8 6", 
                header = T) %>%
  tibble::rownames_to_column("name")

#connection between nodes
E <- matrix(c(0,    1,    0,    0,    0, 0, 0,
              0,    0,    1,    0,    0, 0, 0,
              0,    0,    0,    1,    1, 0, 0,
              0,    0,    0,    0,    0, 1, 0,
              0,    0,    0,    0,    0, 0, 1,
              0,    0,    0,    1,    0, 0, 0,
              0,    0,    0,    0,    1, 0, 0), nrow = 7, byrow = T) %>%
  data.frame() %>% 
  rename_all(list(function(x) 1:7)) %>% 
  tibble::rownames_to_column(var = "from") %>% 
  gather(to, val, 2:6) %>% 
  filter(val == 1) %>%
  select(from, to)

#generate the igraph
g <- graph_from_data_frame(E, vertices = V, directed = F)


#plot the graph

  ggraph(g) +  
  geom_edge_link(edge_width = 1.3) + 
  geom_node_label(aes(label = name),label.r = unit(0.75, "lines"), 
                  label.size = 0.65, label.padding = unit(0.55,"lines"), show.legend = F) +
  ggtitle("My plot") +
  coord_flip() +
  expand_limits(x = 0, y = 0) +
  
  # Using scale_x_reverse and swapping the limits
  scale_x_reverse(expand = c(0, 0), limits = c(9, 0), breaks = c(0:9), minor_breaks = NULL) + 
  # switching y position to "right" (pre-flip)
  scale_y_continuous(expand = c(0, 0),limits = c(0, 9), breaks = c(0:9), minor_breaks = NULL, position = "right") +
  theme_minimal()