Select Edge

Although the node is designed to select edges, it cannot always cope with this. There are 2 modes when choosing an edge where there are fewer vertexes and based on degrees between edges.

Settings

Drop-down menu – mode selection between the number of vertexes and the angle between the edges.

Vertex less – Choosing where the number of vertexes is less than the value.
Blur Iteration – Blur
Blur weight – Weight
Threshold – For the edge angle mode, selects when the value is greater than the threshold

When using blur, you can use a Colorramp or a Floating Curve to add softness or contrast to the values.

How to use
Motion Node Select Edge 1
Motion Node Select Edge 2
Factor value is 0.5, index 1 will get the value 1.
Motion Node Select Edge 3
Factor value is 0.5, index 1 will get the value 1.