I’m trying to make this graph with graphviz, but I’m unable to keep the nodes at the same level and order.
My dot file is like this
digraph cfg{
rankdir=LR;
graph [pad=0.5; ranksep=1, nodesep=0.4];
subgraph cluster_1{
node [shape = doublecircle] D;
node [shape = circle];
color=white;
rank = same; A; B; C; D;
A [label = 1];
B [label = 2];
C [label = 3];
D [label = 4];
A -> B;
B -> C;
C -> D;
}
subgraph cluster_0{
node [shape = doublecircle] 4;
node [shape = circle];
color=white;
1 -> 2 [taillabel = <n-p<sub>a</sub>> labeldistance=3.0];
2 -> 3 [taillabel = <0-p<sub>b</sub>> labeldistance=3.0];
3 -> 4 [taillabel = <n-p<sub>a</sub>> labeldistance=3.0];
1 -> 1 [taillabel =<Np<sub>a</sub>/x-p<sub>a</sub>> labeldistance=5.0];
2 -> 2 [taillabel =<Np<sub>a</sub>n> labeldistance=5.0];
3 -> 2 [taillabel =<Np<sub>a</sub>n> labeldistance=5.0];
4 -> 4 [taillabel =<N/x-p<sub>a</sub>> labeldistance=5.0];
4 -> 2 [taillabel =<n-p> labeldistance=5.0];
}
}
I almost got it right. I used neato to be able to control de position. I only have two problems now. The first one is the edges " 3 → 2", “4 → 2” that are straight lines, I was unable to make it curved. The second problem is the edge label position, it’s to closed to the edge.
digraph cfg{
rankdir=LR;
layout=neato;
graph [pad=0.5; ranksep=1, nodesep=0.5];
fontname="Arial";
subgraph cluster_1{
node [shape = doublecircle] D;
node [shape = circle];
color=white;
A [label = 1, pos="0,-2!"];
B [label = 2, pos="1.5,-2!"];
C [label = 3, pos="3,-2!"];
D [label = 4, pos="4.5,-2!"];
A -> B [taillabel = <n-p<sub>a</sub>> labeldistance=2.0 tailport=e, headport=w];
B -> C [taillabel = <m-p<sub>b</sub>> labeldistance=2.0 tailport=e, headport=w];
C -> D [taillabel = <y-p<sub>b</sub>> labeldistance=2.0 tailport=e, headport=w];
A -> A [label =<Np<sub>b</sub>>, tailport=n, headport=n dir=back];
C -> C [label =<Np<sub>b</sub>n/y-p<sub>b</sub>>, tailport=n, headport=n dir=back];
D -> D [label =<N/n-p<sub>a</sub>>, tailport=n, headport=n dir=back];
B -> A [label =<x-p<sub>a</sub>> tailport=s, headport=s splines=true];
D -> B [label =<x-p<sub>a</sub>> tailport=s, headport=s splines=true];
}
subgraph cluster_0{
node [shape = doublecircle] 4;
node [shape = circle];
color=white;
1 [pos="0,0!"];
2 [pos="1.5,0!"];
3 [pos="3,0!"];
4 [pos="4.5,0!"];
1 -> 2 -> 3 -> 4 [ color="invis" ];
1 -> 2 [taillabel = <x-p<sub>a</sub>> labeldistance=2.0 tailport=e, headport=w];
2 -> 3 [taillabel = <0-p<sub>b</sub>> labeldistance=2.0 tailport=e, headport=w];
3 -> 4 [taillabel = <n-p<sub>a</sub>> labeldistance=2.0 tailport=e, headport=w];
1 -> 1 [label =<Np<sub>a</sub>/x-p<sub>a</sub>>, tailport=n, headport=n dir=back];
2 -> 2 [label =<Np<sub>a</sub>n> labeldistance=1.0 tailport=n headport=n dir=back];
3 -> 2 [label =<Np<sub>a</sub>n> tailport=n headport=n splines=curved];
4 -> 4 [label =<N/x-p<sub>a</sub>> tailport=n, headport=n dir=back];
4 -> 2 [label =<x-p<sub>a</sub>> tailport=s, headport=s splines=true];
}
}
Here is a dot version that is pretty close. Some of the changes are cosmetic (port specifications and clusters) but most seemed to be necessary.
- rankdir attribute must be in in NON-cluster subgraph
- xlabel seems to work better than taillable (better placement & edges)
- it was a struggle to get desired text placement and label placement
- Note that
<sub> (subscripts) seems to be broken in recent versions of Graphviz, I will create an issue
// from https://forum.graphviz.org/t/keep-nodes-at-their-position/1134
digraph cfg{
//rankdir=LR; // not needed
graph [ranksep=1.5, nodesep=0.5];
// clusters not needed, but do not hurt
//subgraph cluster_0{
//node [shape = doublecircle] 4;
node [shape = circle];
color=white;
{ rank=same
// combined node attributes (e.g. shape, group, label)
1 [group=A1]
2 [group=B2]
3 [group=xyz]
4 [group=abc shape = doublecircle]
1 -> 2 [label = <x-p<SUB>a</SUB>> ]
2 -> 3 [xlabel = <0-p<sub>b</sub>> ]
3 -> 4 [label = <n-p<sub>a</sub>> ]
1:n -> 1:n [label =<Np<sub>a</sub>/x-p<sub>a</sub>> ]
2:n -> 2:n [label =<Np<sub>a</sub>n> constraint=false];
3:nw -> 2:ne [taillabel =<Np<sub>a</sub>n> constraint=false labeldistance=4.0]
4:n -> 4:n [label =<N/x-p<sub>a</sub>>];
4:s -> 2:s [xlabel =<x-p<sub>a</sub>> labeldistance=10]
}
//}
//subgraph cluster_1{
//node [shape = doublecircle] D;
node [shape = circle];
color=white;
{rank = same;
// combined node attributes (e.g. shape, group, label)
A [group=A1 label = 1]
B [group=B2 label = 2]
C [group=xyz label = 3]
D [shape = doublecircle group=abc label = 4]
A -> B [label = <n-p<sub>a</sub>> ]
B -> C [label = <m-p<sub>b</sub>> ]
C -> D [label = <y-p<sub>b</sub>> ]
A:n -> A:n [label =<Np<sub>b</sub>>, dir=back];
C -> C [label =<Np<sub>b</sub>n/y-p<sub>b</sub>>, tailport=n, headport=n dir=back];
D -> D [label =<N/n-p<sub>a</sub>>, tailport=n, headport=n dir=back];
B:s -> A:s [label =<x-p<sub>a</sub>> ]
D:s -> B:s [xlabel =<n-p> labeldistance=10. constraint=false];
}
//}
edge [style=invis]
// invisible edges & group attribute for vertical alignment
1->A // establish 2nd rank
// vertically align other nodes, by group
2->B
3->C
4->D
}
Giving:
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