force.initialize(nodes) Assigns the array of nodes to this force. This method is called when a force is bound

collide.radius([radius]) If radius is specified, sets the radius accessor to the specified number or function

x.strength([strength]) If strength is specified, sets the strength accessor to the specified number or function

simulation.force(name[, force]) If force is specified, assigns the

simulation.stop() Stops the simulation’s internal timer, if it is running, and returns the simulation. If the timer is already

simulation.on(typenames, [listener]) If listener is specified, sets the event listener for

simulation.alphaTarget([target]) If target is specified, sets the current target

d3.forceCollide([radius]) Creates a new circle collision force with the specified

d3.forceY([y]) Creates a new positioning force along the y-axis towards the given position

y.strength([strength]) If strength is specified, sets the strength accessor to the specified number or function