Voyager reading note

The system structure :

system structure.png

Algorithm
Compass applies prior work by Graphical perception: Theory, experimentation,
and application to the development of graphical methods and Automating the design of graphical presentations of relational information to rank the effectiveness of each visual channel based on a variable’s data type (Table 1).

Compass also considers the cardinality, or number of unique values, of a data variable. Encoding

compass engine.png

Related resources
A visualization grammar, a declarative language for creating, saving, and sharing interactive visualization designs.
Vega
Vega-lite