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[igraph] stochastic nature of network coordinate generation?

From: James T Metz
Subject: [igraph] stochastic nature of network coordinate generation?
Date: Fri, 7 Oct 2011 11:33:17 -0500

Igraph Users,

        I am using the following function to generate 2D coordinates for a network

        coords <- layout.fruchterman.reingold(network, weights = E(network)$weight)

        However, I have noted that when I call this function several times, I get different
coordinates for the same input.  Hence, there seems to be some kind of stochastic
or random characteristic of this function.

        Is there a random number seed or some parameter that can be set so that the same
output coordinates are generated for the same input every time this function is called?

        Thank you.

        Jim Metz

James T. Metz, Ph.D.
Senior Scientist III Chemistry

GPRD R4DG AP52 - 01D10P
Abbott Laboratories
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