Nodes in force graphs beginning position random

[rafael lage]

Hi people, I'm having another problem with force directed graphs, but I couldn't express myself well in the title, I suppose.

When my graph is loaded, the nodes and paths starts in a random position, sometimes even outside the svg frame, and then they are sucked by that gravity function. I couldn't find anything that helps me draw the graph in the center of svg. Is there a way to do it?

Rafael Lage Tavares
Unirio - Universidade Federal do Estado do Rio de Janeiro

[wlindner]

Just set the 'x' and 'y' attributes of the nodes that are being added
to the force directed layout to be the center of the graph:

https://github.com/mbostock/d3/wiki/Force-Layout#wiki-nodes

[rafael lage]

Hey thanks for the response. I didn't know this was possible, I thought that the force.start() would mess the coordinates.

Rafael Lage Tavares
Unirio - Universidade Federal do Estado do Rio de Janeiro

2012/1/28 wlindner <wlind...@gmail.com>

[Mike Bostock]

> I thought that the force.start() would mess the coordinates.

It only initializes the current position or the previous position if
those fields are undefined:

https://github.com/mbostock/d3/blob/master/src/layout/force.js#L202-205

Mike

[rafael lage]

Oh I see. Thanks for that Mike!

Rafael Lage Tavares
Unirio - Universidade Federal do Estado do Rio de Janeiro

2012/1/28 Mike Bostock <mbos...@cs.stanford.edu>