Error Creating Graph using graph(V,E)

[onlyhalfwaytrue]

The vs and es sets are already created with vertices and edges already there. They worked when I created an edgelist graph.

julia> g = graph(vs,es,is_directed=false)
ERROR: make_vertex has no method matching make_vertex(::GenericGraph{Any,Any,Array{Any,1},Array{Any,1},Array{Array{Any,1},1}}, ::KeyVertex{ASCIIString})
in add_vertex! at /Users/ja26144/.julia/v0.3/Graphs.jl/src/graph.jl:100
in graph at /Users/ja26144/.julia/v0.3/Graphs.jl/src/graph.jl:44

[bjmtrk]

I am having the same problem.

julia> using Graphs

julia> typealias SEdge Edge{AbstractString}
Graphs.Edge{AbstractString}

julia> g = graph(["A","B","C","D"],SEdge[])
Directed Graph (4 vertices, 0 edges)

julia> typeof(g)
Graphs.GenericGraph{ASCIIString,Graphs.Edge{AbstractString},Array{ASCIIString,1},Array{Graphs.Edge{AbstractString},1},Array{Array{Graphs.Edge{AbstractString},1},1}}

julia> eds = [("A", "B"), ("B", "C"), ("C", "A"), ("C", "D")]
4-element Array{Tuple{ASCIIString,ASCIIString},1}:
("A","B")
("B","C")
("C","A")
("C","D")

julia> for (u, v) in eds
add_edge!(g, u, v)
end
ERROR: MethodError: add_edge! has no method matching add_edge!(::Graphs.GenericGraph{ASCIIString,Graphs.Edge{AbstractString},Array{ASCIIString,1},Array{Graphs.Edge{AbstractString},1},Array{Array{Graphs.Edge{AbstractString},1},1}}, ::ASCIIString, ::ASCIIString, ::Graphs.Edge{ASCIIString})
Closest candidates are:
add_edge!{V,E}(::Graphs.GenericIncidenceList{V,E,VList,IncList}, ::V, ::V, ::E)
add_edge!{V,E}(::Graphs.GenericGraph{V,E,VList,EList,IncList}, ::V, ::V, ::E)
add_edge!{V,E}(::Graphs.GenericGraph{V,E,VList,EList,IncList}, ::V, ::V)
...

[weijianzhg]

Hi @bjmtrk,

typealias SEdge Edge{ASCIIString}

will work in your example.

If you check the source,

add_edge!{V,E}(g::GenericGraph{V,E}, u::V, v::V) = add_edge!(g, u, v, make_edge(g, u, v))

This means the nodes and edges must have the same type. In your example, the nodes are ASCIIString but the edges are AbstractString.