Distribute nodes on the same rank of a wide graph to different lines
dot, graphviz, nodes
Solution
Here are two possibilities (see also this question):
1. Use the `unflatten` utility
Graphviz provides a tool called `unflatten`. If you pre-process your graph using this command line:
unflatten -l 3 wide.gv | dot -Tpng -o wide.png
the output image will be similar to the below picture. This is slightly less wide, and you may play with the `-l` option.
2. Use `rank=same' and invisible edges
You may use the standard techniques to make a automatically layed out graphs look more like you want it to:
- `rank=same` to group nodes in subgraphs and to define which nodes should be on the same line
- invisible edges to ensure that the different subgraphs appear on different ranks
- maybe some `constraint=false` for some edges to influence the layout
- `group` attributes of nodes to encourage straight edges.
The output graph will not necessarily be prettier...
Here's an example, you can probably do better. Also, this may not be very practical if the graph is generated dynamically.
digraph G {
nodesep=0.3;
ranksep=0.2;
margin=0.1;
node [shape=rectangle];
edge [arrowsize=0.8];
edge[style=invis];
node[group=a];
2->5->8;
node[group=b];
1->3->6->9;
node[group=c];
4->7->10;
edge[style=solid];
1 -> 2;
1 -> 3;
1 -> 4;
edge[constraint=false];
1 -> 5;
1 -> 6;
1 -> 7;
1 -> 8;
1 -> 9;
1 -> 10;
}
Problem
I have a graph (organigram) how this: ``` digraph G { nodesep=0.3; ranksep=0.2; margin=0.1; node [shape=rectangle]; edge [arrowsize=0.8]; 1 -> 2; 1 -> 3; 1 -> 4; 1 -> 5; 1 -> 6; 1 -> 7; 1 -> 8; 1 -> 9; 1 -> 10; } ``` I have organigrams with 70 people and it's impossible to print in A4. How would I put nodes in 2 or 3 lines?