Line endpoints 

This nodes finds start and end points of a line geometry

Line merge 

This node merges a collection of lines into a single line

Buffer 

Constructs a polygon at a specified distance from the geometry

Concave Hull 

This node computes concave hull of geometries

Convex hull 

This node computes convex hull of geometries

Centroid 

Find centroid of a geometry

Minimum bounding rectangle 

This nodes returns the minimum bounding rectangle of a geometry

Remove holes 

This node removes holes from polygon geometry

Remove repeated points 

This node remove repeated points in a geometry

Unary union 

This node find unary union of geometries