# aes

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##### Construct aesthetic mappings

Aesthetic mappings describe how variables in the data are mapped to visual properties (aesthetics) of geoms. Aesthetic mappings can be set in ggplot2 and in individual layers.

##### Usage
aes(x, y, ...)
##### Arguments
x, y, ...
List of name value pairs giving aesthetics to map to variables. The names for x and y aesthetics are typically omitted because they are so common; all other aesthetics must be named.
##### Details

This function also standardise aesthetic names by performing partial matching, converting color to colour, and translating old style R names to ggplot names (eg. pch to shape, cex to size)

See aes_ for a version of aes that is more suitable for programming with.
library(ggplot2) aes(x = mpg, y = wt) aes(mpg, wt) # You can also map aesthetics to functions of variables aes(x = mpg ^ 2, y = wt / cyl) # Aesthetic names are automatically standardised aes(col = x) aes(fg = x) aes(color = x) aes(colour = x) # aes is almost always used with ggplot() or a layer ggplot(mpg, aes(displ, hwy)) + geom_point() ggplot(mpg) + geom_point(aes(displ, hwy)) # Aesthetics supplied to ggplot() are used as defaults for every layer # you can override them, or supply different aesthetics for each layer