Edge to the same node?

[EquaI1ty]

Hi,
I've tried to use sigma.js for the first time. I need to draw edge from n1 to n1 (to the same node), it's possible? Maybe this result can be achieved with help of some plugins?

[Yomguithereal]

Hello @EquaI1ty. Sigma.js does not support self-links out of the box. I remember a plugin rendering such links but cannot find it back.

[AVermeij]

I've worked with this type of edges quite a few times with sigma and it actually works very well when using curved edges. When the source and target of the edge are the same, sigma resorts to calculating control points for a self-loop; else, it calculates regular quadratic control points. See lines 29-31 over at https://github.com/jacomyal/sigma.js/blob/master/src/renderers/canvas/sigma.canvas.edges.curve.js.

Add your edge as below and it should show fine:
s.graph.addEdge({ id: 'e1', source: 'n1', target: 'n1', size: Math.random(), type: 'curve' });

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[Gvenvivar25]

Hello!
In sigma version 3 is it still possible to o draw edge from n1 to n1 (to the same node)? I've tried to use graph as MultiDirectedGraph and such sigma settings as:
defaultEdgeType: 'curved',
edgeProgramClasses: {
straight: EdgeArrowProgram,
curved: EdgeCurveProgram,
},
but I don't see my self-looped edges in the graph, only edges with different target node

[lukaszbachman]

@Gvenvivar25 it doesn't seem like it's implemented yet in v3. See this ticket: #1429