// in the Middle East as described in the Slate article:
	// http://www.slate.com/blogs/the_world_/2014/07/17/the_middle_east_friendship_chart.html
	g, err := community.NewUndirectedLayers(friends, enemies)
	if err != nil {
		log.Fatal(err)
	}
	weights := []float64{1, -1}

	// Get the profile of internal node weight for resolutions
	// between 0.1 and 10 using logarithmic bisection.

	// in the Middle East as described in the Slate article:
	// http://www.slate.com/blogs/the_world_/2014/07/17/the_middle_east_friendship_chart.html
	g, err := community.NewUndirectedLayers(friends, enemies)
	if err != nil {
		log.Fatal(err)
	}
	weights := []float64{1, -1}

	// Get the profile of internal node weight for resolutions
	// between 0.1 and 10 using logarithmic bisection.