use @__DIR__ instead of Pkg.dir (#47)

* use @__DIR__ instead of Pkg.dir

this allows installing and loading the package from elsewhere

* change Pkg.dir to @__DIR__ in runtests.jl

* use dirname(@__DIR__) instead of Pkg.dir in GraphPlot.jl

Author: tkelman

src/GraphPlot.jl

@@ -32,7 +32,7 @@ include("plot.jl")
 include("graphio.jl")
 
 function test()
-    include(joinpath(Pkg.dir("GraphPlot"), "test", "runtests.jl"))
+    include(joinpath(dirname(@__DIR__), "test", "runtests.jl"))
 end
 
 

src/graphio.jl

@@ -14,7 +14,7 @@ a graph
     julia> g = graphfamous("karate")
 """
 function graphfamous(graphname::AbstractString)
-    file = joinpath(Pkg.dir("GraphPlot"), "data", graphname*".dat")
+    file = joinpath(dirname(@__DIR__), "data", graphname*".dat")
     readedgelist(file)
 end
 

test/runtests.jl

@@ -10,7 +10,7 @@ h = LightGraphs.WheelGraph(10)
 nodelabel = collect(1:nv(g))
 nodesize = outdegree(g) .* 1.0
 
-cachedout = joinpath(Pkg.dir("GraphPlot"), "test", "examples")
+cachedout = joinpath(@__DIR__, "examples")
 
 @testset "Undirected Karate Net" begin
     filename = joinpath(cachedout, "karate_different_nodesize.svg")