Aesthetic Attributes: Color, Size, Shape (1)
colour, size and shape: Additional aesthetics that can be specified in aes(...)- Ggplot2 takes care of mapping data to aesthetic scale
- 1 scale for each aesthetic mapping
- Scale creates a guide (axis or legend) for reading/decoding
- Decoding = Convert aesthetic values to data values
- Default scales vs. manual scales (…we’ll see later)
- Setting an aesthetic to fixed value is done outside of
aes(...). Compare…
ggplot(economics, aes(date, unemploy)) + geom_point(aes(colour ="blue"))ggplot(economics, aes(date, unemploy)) + geom_point(colour ="blue")