# ease_aes: Control easing of aesthetics In gganimate: A Grammar of Animated Graphics

## Description

Easing defines how a value change to another during tweening. Will it progress linearly, or maybe start slowly and then build up momentum. In `gganimate`, each aesthetic or computed variable can be tweened with individual easing functions using the `ease_aes()` function. All easing functions implemented in `tweenr` are available, see tweenr::display_ease for an overview. Setting an ease for `x` and/or `y` will also affect the other related positional aesthetics (e.g. `xmin`, `yend`, etc).

## Usage

 `1` ```ease_aes(default = "linear", ...) ```

## Arguments

 `default` The default easing function to use (defaults to `'linear'`) `...` Override easing for specific aesthetics

## Easing functions

• quadratic Models a power-of-2 function

• cubic Models a power-of-3 function

• quartic Models a power-of-4 function

• quintic Models a power-of-5 function

• sine Models a sine function

• circular Models a pi/2 circle arc

• exponential Models an exponential function

• elastic Models an elastic release of energy

• back Models a pullback and relase

• bounce Models the bouncing of a ball

Modifiers

• -in The easing function is applied as-is

• -out The easing function is applied in reverse

• -in-out The first half of the transition it is applied as-is, while in the last half it is reversed

## Examples

 ``` 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26``` ```anim <- ggplot(mtcars, aes(mpg, disp)) + transition_states(gear, transition_length = 2, state_length = 1) + enter_fade() + exit_fade() ## Not run: # Default uses linear easing animate(anim) ## End(Not run) # Change all to 'cubic-in-out' for a smoother appearance anim1 <- anim + ease_aes('cubic-in-out') ## Not run: animate(anim1) ## End(Not run) # Only change easing of y variables anim2 <- anim + ease_aes(y = 'bounce-in') ## Not run: animate(anim2) ## End(Not run) ```

gganimate documentation built on Oct. 23, 2020, 8:04 p.m.