print_dot now generates an horizontal graph.

diff --git a/mtp_graph.cc b/mtp_graph.cc
index 473d13e..95ef485 100644 (file)
--- a/mtp_graph.cc
+++ b/mtp_graph.cc
@@ -153,6 +153,7 @@ void MTPGraph::print(ostream *os) {
 
 void MTPGraph::print_dot(ostream *os) {
   (*os) << "digraph {" << endl;
+  (*os) << "        rankdir=\"LR\";" << endl;
   (*os) << "        node [shape=circle,width=0.75,fixedsize=true];" << endl;
   (*os) << "        edge [color=gray,arrowhead=open]" << endl;
   (*os) << "        " << _source->id << " [peripheries=2];" << endl;