- aes #!key x y color fill size shape alpha linetype group labelprocedure
- make-aes ...procedure
Both are equivalent. Column references are symbols; literal values are strings or numbers:
(aes #:x 'time #:y 'value #:color 'condition) ; x, y, color mapped to columns (aes #:x 'time #:y 'value #:color "steelblue") ; color is a constant