> In python igraph version, g=Graph();
> g.layout_fruchterman_reingold(weights=edgeweightlist) function in igraph
> produces different layout of graph each time for same graph nodes and same
> edgeweightlist. How to turn off this randomness to produce the same graph
> each time?
>
Just set the seed of the random number generator to an arbitrary fixed
value before calling the layout function:
>>> from random import seed
>>> from igraph import Graph
>>> g=Graph.GRG(100, 0.2)
>>> seed(1234)
>>> lo=g.layout("fr")
>>> lo[:10]
[[-7.319725822182468, -2.5222146293950525], [-6.042515482711504,
6.60729011892673], [-7.766841439471336, -1.072218029492348],
[-7.868509175067755, -6.519283541476223], [-6.607952925294913,
-5.512660296266184], [-6.896034600003832, 3.5033722770007247],
[-7.439334008796665, -0.18725281663352827], [-6.568594470049888,
-6.971425023807268], [-7.610905586198632, -6.890279777715495],
[-7.220889614908134, -1.5430061492566187]]
>>> seed(1234)
>>> lo=g.layout("fr")
>>> lo[:10]
[[-7.319725822182468, -2.5222146293950525], [-6.042515482711504,
6.60729011892673], [-7.766841439471336, -1.072218029492348],
[-7.868509175067755, -6.519283541476223], [-6.607952925294913,
-5.512660296266184], [-6.896034600003832, 3.5033722770007247],
[-7.439334008796665, -0.18725281663352827], [-6.568594470049888,
-6.971425023807268], [-7.610905586198632, -6.890279777715495],
[-7.220889614908134, -1.5430061492566187]]
T.
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