Adjust the edge length

[nudles]

I'm submitting a...

[ ] Regression (a behavior that used to work and stopped working in a new release)
[ ] Bug report  
[ ] Performance issue
[ ] Feature request
[ ] Documentation issue or request
[x] Other... Please describe: question about usage

Current behavior

Is there a way to reduce the lengths of edges to make the graph more compact? Thanks!

What is the motivation / use case for changing the behavior?

Sometimes, the graph is sparse (i.e., the nodes are connected by a long edge).