A full circle lineament can display orientational values (e.g., orientation of lineaments), or directional values (e.g., direction of fold axes),
depending on the option you choose while plotting the graph.
The lineament graph types include full circle (symmetric for orientational data, or asymmetric for directional data) and half circle.
Full- and a Half-Circle Lineament Diagrams and the Corresponding Summary Statistics Table From Eastern Bangladesh Data*
* Source of data: Davis, John C. (2002). Statistics and Data Analysis in Geology. John Wiley & Sons, New York.