README outdated? about rgl

[monora]

Hm, could you provide more information. What ruby and RGL version do you use? Here is my example session:

$ irb
irb(main):001:0> require 'rgl/adjacency'
=> true
irb(main):002:0> dg=RGL::DirectedAdjacencyGraph[1,2 ,2,3 ,2,4, 4,5, 6,4, 1,6]
=> (1-2)(1-6)(2-3)(2-4)(4-5)(6-4)
irb(main):003:0> require 'rgl/dot'
=> true
irb(main):004:0> dg.write_to_graphic_file('jpg')
=> "graph.jpg"
irb(main):006:0* RGL_VERSION
=> "0.5.1"
irb(main):007:0> dg.edges.sort.to_s
=> "[(1-2), (1-6), (2-3), (2-4), (4-5), (6-4)]"
exit
$ ruby --version
ruby 1.9.3p484 (2013-11-22 revision 43786) [i686-linux]

[gorn]

Here is what i get

$ irb
irb(main):001:0> require 'rgl/adjacency'
=> true
irb(main):002:0> dg=RGL::DirectedAdjacencyGraph[1,2 ,2,3 ,2,4, 4,5, 6,4, 1,6]
=> #<RGL::DirectedAdjacencyGraph:0x00000000e9b470 @edgelist_class=Set, @vertices_dict={1=>#<Set: {2, 6}>, 2=>#<Set: {3, 4}>, 3=>#<Set: {}>, 4=>#<Set: {5}>, 5=>#<Set: {}>, 6=>#<Set: {4}>}>
irb(main):003:0> require 'rgl/dot'
=> true
irb(main):004:0> dg.write_to_graphic_file('jpg')
=> "graph.jpg"
irb(main):005:0> RGL_VERSION
=> "0.5.1"
irb(main):006:0> dg.edges.sort.to_s
=> "[#<RGL::Edge::DirectedEdge:0x00000000c29930 @source=1, @target=2>, #<RGL::Edge::DirectedEdge:0x00000000c29868 @source=1, @target=6>, #<RGL::Edge::DirectedEdge:0x00000000c29778 @source=2, @target=3>, #<RGL::Edge::DirectedEdge:0x00000000c29728 @source=2, @target=4>, #<RGL::Edge::DirectedEdge:0x00000000c29520 @source=4, @target=5>, #<RGL::Edge::DirectedEdge:0x00000000c29368 @source=6, @target=4>]"
irb(main):007:0> exit
$ ruby --version
ruby 2.1.5p273 (2014-11-13) [x86_64-linux-gnu]
$ 

and the graph.dit is generated in the current directory (but no graph.jpg).

PS: sidenote - also have a look at https://github.com/monora/rgl it does not show pistures, i.e. link https://github.com/monora/rgl/blob/master/images/example.jpg is broken

[michalvantuch]

It's the same for me. It generated only .dot file, but not image.