Avoid edge intersection in graphviz

Question

Suppose we have the following simple graph:

digraph Test {

    Start[shape = doublecircle];
    Foo[shape = square];
    Bar[shape = diamond];
    Baz[shape = square];
    Xyz[shape = square];

    Start -> Foo;
    Foo:s -> Bar:n;
    Bar:w -> Baz:n;
    Bar:e -> Xyz:n;
    Baz:s -> Foo:n;

}

Which is rendered as follows:

Is there a way to tell graphviz to draw edge Baz -> Foo without intersections with Foo -> Bar nor Bar -> Baz?

Answer 1

when it comes to graphviz layout, the best you can do is trying as much as possible to not interfere :)

taking out compass_pt from your file:

digraph Test {

    Start[shape = doublecircle];
    Foo[shape = square];
    Bar[shape = diamond];
    Baz[shape = square];
    Xyz[shape = square];

    Start -> Foo;
    Foo -> Bar;
    Bar -> Baz;
    Bar -> Xyz;
    Baz -> Foo;

}

and you get:

Answer 2

Adding an invisible node should do the trick:

digraph Test {

    Start[shape = doublecircle];
    Foo[shape = square];
    Bar[shape = diamond];
    Baz[shape = square];
    Xyz[shape = square];

    // "invisible" node to connect baz to foo
    BazToFoo [shape=none, label="", height=0, width=0]

    Start -> Foo;
    Foo:s -> Bar:n;
    Bar:w -> Baz:n;
    Bar:e -> Xyz:n;
    Baz:s -> BazToFoo [dir=none] // remove the arrowhead
    BazToFoo -> Foo:n;

}