# Lack of arrows in Markov Chain graphs

When I try to graph the Markov chain with Graph[proc] I get the correct diagraph, but without the arrows pointing towards the appropriate states. I am literally copying and pasting the code from the above site. I'm using Mathematica 10.2.0.0 on Windows 10.

• What I mean to say is that the arrowheads are missing, not the connecting edges themselves. – Zelador Sep 11 '15 at 2:31
• I guess it's the size of vertex is too large. Try use a smaller parameter like Graph[proc, GraphLayout -> "LayeredDrawing", VertexSize -> Small]. – Silvia Sep 11 '15 at 6:07
• I looked into the underlying Boxes again, it looks like the expression for graph visualization has changed, GraphComputationNetworkGraphicsBox  and DynamicLocation are no longer used. Maybe the new way will have a better performance. – Silvia Sep 11 '15 at 6:28
• @Silvia, both your and the accepted answer worked. Could you elaborate a little bit more on what you mean by the change in the graph visualization? – Zelador Sep 11 '15 at 21:13
• I think halmir's answer is great, you can safely forget about what I said above :) – Silvia Sep 12 '15 at 5:11

proc = DiscreteMarkovProcess[
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