using ortho splines with tikz output doesn't produce orthogonal edges

[lebedov]

I'm using graphviz 2.38.0 compiled --with-gts on Ubuntu 14.04.3; when I process the following graph with dot2tex -p --prog fdp -f tikz file_name.dot I obtain the attached figure:

digraph {
    graph [splines=ortho];
    node [shape=rect];
    a;  
    b;  
    c;  
    d;  
    e;  
    f;  
    g;  
    h;  
    c -> e;
    c -> b;
    b -> a;
    e -> a;
    e -> d;
    e -> f;
    c -> d;
    b -> f;
    f -> g;
    g -> h;
    h -> e;
}

I

[kjellmf]

Ortho splines are not supported by the tikz output format. A workaround is to use the default pgf format instead.