Colouring edges in GraphMakie.jl

Hi! I’m making a graph based on an adjacency matrix of 1’s and 2’s (which indicates which colour the edge should be). Currently, I can’t colour individual edges like shown in the third example of this page.

I think this is because I’m using graphplot!(ax, …) instead of f, ax, p = graphplot() because I have multiple axes that I’m plotting. I don’t know how to use f, ax, p = graphplot() and then put that into a gridlayout().

g = SimpleDiGraph(ODENetworkModel.num_nodes)
fig = Figure(size = (1920, 1080))


# create graph visualisation
ax1 = Axis(network_and_init[1,1], title = "$(ODENetworkModel.num_nodes) Node System", width = 250, height = 250, xrectzoom = false, yrectzoom = false)
println("Created network...")
edge_colours = []

for i in 1:ODENetworkModel.num_nodes
    for j in 1:ODENetworkModel.num_nodes
         if ODENetworkModel.adj_matrix[i,j] == 1
            add_edge!(g, i, j)
            push!(edge_colours,1)
        elseif ODENetworkModel.adj_matrix[i,j] == 2
            add_edge!(g, i, j)
            push!(edge_colours,2)
        end
    end 
end

p = graphplot!(ax1, g, ilabels = [i for i in 1:ODENetworkModel.num_nodes], nlabels = parameter_labels(ODENetworkModel.num_nodes, ODENetworkModel.par_adj_matrix))
    
# trying to change the colour of JUST some edges, but this doesn't work because I need to use graphplot, but I can't do that because I need to put it into the right gridlayout
# for edge in 1:length(edge_colours)
#     if edge_colours[edge] == 2
#         p.edge_color[][edge] = :red
#     end
# end
p.edge_color[] = :red # turns all of the edges red...
p.edge_color = p.edge_color[] # trigger observable

I thought that p.edge_color was a list of Symbols (colours)? But in my code it is just one colour…

Many thanks :slight_smile: