digraph G {
bgcolor=blue
node [shape = circle,style=filled,fillcolor="white:black"]
subgraph cluster_1 {
fontcolor="white"
n9 [gradientangle=360 label="n8:360"]
n8 [gradientangle=315 label="n8:315"]
n7 [gradientangle=270 label="n7:270"]
n6 [gradientangle=225 label="n6:225"]
n5 [gradientangle=180 label="n5:180"]
n4 [gradientangle=135 label="n4:135"]
n3 [gradientangle=90 label="n3:90 "]
n2 [gradientangle=45 label="n2:45 "]
n1 [gradientangle=0 label="n1:0 "]
label = "Linear Angle Variations (white to black gradient)";
}
subgraph cluster_2 { fontcolor="white"
node [style=radial]
n18 [gradientangle=360 label="n17:360"]
n17 [gradientangle=315 label="n17:315"]
n16 [gradientangle=270 label="n16:270"]
n15 [gradientangle=225 label="n15:225"]
n14 [gradientangle=180 label="n14:180"]
n13 [gradientangle=135 label="n13:135"]
n12 [gradientangle=90 label="n12:90 "]
n11 [gradientangle=45 label="n11:45 "]
n10 [gradientangle=0 label="n10:0 "]
label = "Radial Angle Variations (white to black gradient)";
}
n5 -> n14;
}