added constructor

Author: sbromberger

src/simpleweighteddigraph.jl

@@ -39,6 +39,11 @@ function SimpleWeightedDiGraph(g::LightGraphs.SimpleGraphs.AbstractSimpleGraph,
     return SimpleWeightedDiGraph{T, U}(x.*adjacency_matrix(g, U)')
 end
 
+# SimpleWeightedGraph{T, U}(SimpleGraph)
+function (::Type{SimpleWeightedDiGraph{T, U}})(g::LightGraphs.SimpleGraphs.SimpleDiGraph)  where T<:Integer where U <: Real
+    SimpleWeightedDiGraph{T, U}(adjacency_matrix(LightGraphs.SimpleGraphs.SimpleDiGraph{T}(g), U))
+end
+
 # DiGraph(srcs, dsts, weights)
 SimpleWeightedDiGraph(i::AbstractVector{T}, j::AbstractVector{T}, v::AbstractVector{U}) where T<:Integer where U<:Real =
     SimpleWeightedDiGraph{T, U}(sparse(i,j,v))

src/simpleweightedgraph.jl

@@ -47,6 +47,11 @@ SimpleWeightedGraph(g::LightGraphs.SimpleGraphs.SimpleGraph{T}, x::U) where T <:
 SimpleWeightedGraph(g::LightGraphs.SimpleGraphs.SimpleDiGraph{T}, x::U) where T <: Integer where U <: Real =
     SimpleWeightedGraph{T, U}(x.*adjacency_matrix(LightGraphs.SimpleGraphs.SimpleGraph(g), U))
 
+# SimpleWeightedGraph{T, U}(SimpleGraph)
+function (::Type{SimpleWeightedGraph{T, U}})(g::LightGraphs.SimpleGraphs.SimpleGraph)  where T<:Integer where U <: Real
+    SimpleWeightedGraph{T, U}(adjacency_matrix(LightGraphs.SimpleGraphs.SimpleGraph{T}(g), U))
+end
+
 # DiGraph(srcs, dsts, weights)
 SimpleWeightedGraph(i::AbstractVector{T}, j::AbstractVector{T}, v::AbstractVector{U}) where T<:Integer where U<:Real =
     SimpleWeightedGraph{T, U}(sparse(i,j,v))

test/simpleweightedgraph.jl

@@ -175,4 +175,16 @@ importall SimpleWeightedGraphs
     g = SimpleWeightedDiGraph(PathGraph(5), 4.0)
     @test sum(weights(g)) == ne(g) * 4.0
 
+    gx = Graph(4,3)
+    for g in testgraphs(gx)
+        @test eltype(SimpleWeightedGraph(g)) == eltype(g)
+    end
+
+    gx = DiGraph(4,3)
+    for g in testdigraphs(gx)
+        @test eltype(SimpleWeightedGraph(g)) == eltype(g)
+    end
+
+
+
 end