Composition deals with the overall readability and meaning of the project. As noted by Kirk (2016), the topic of composition is divided into project-level and chart-level composition. Reference:

Composition deals with the overall readability and meaning of the project.  As noted by Kirk (2016), the topic of composition is divided into project-level and chart-level composition. Reference: Kirk, A. (2016). Data Visualisation: A Handbook for Data Driven Design (p. 50). SAGE Publications.