Control speed of a gganimation

Question

I want to slow the transition speed between states when using library(gganimate).

Here is a mini example:

# devtools::install_github("thomasp85/gganimate") library(gganimate) # v0.9.9.9999  dat_sim <- function(t_state, d_state) {   data.frame(     x = runif(1000, 0, 1),     y = runif(1000, 0, 1),     t_state = t_state*d_state     ) }  dat <- purrr::map_df(1:100, ~ dat_sim(., 1))  ggplot(dat, aes(x, y)) +   geom_hex(bins = 5) +   theme_void() +   lims(x = c(.3, .7),        y = c(.3, .7)) +   theme(legend.position = "none") +   transition_time(t_state) 

My ideal behavior would be much slower (10-100x), so color changes gradually evolve and nobody has a seizure.

If I try to use transition_states() for more manual control, I get a gif with mostly blank frames. I've tried various combinations for transition_legnth= and state_length= without a noticeable effect.

ggplot(dat, aes(x, y)) +   geom_hex(bins = 5) +   theme_void() +   lims(x = c(.3, .7),        y = c(.3, .7)) +   theme(legend.position = "none") +   transition_states(t_state, transition_length = .1, state_length = 2) 

Answer 1

I found in docs animate function which can take fps and detail parameters.

@param fps The frame rate of the animation in frames/sec

@param detail The number of additional frames to calculate, per frame

The result:

p <- ggplot(dat, aes(x, y)) +       geom_hex(bins = 5) +       theme_void() +       lims(x = c(.3, .7),            y = c(.3, .7)) +       theme(legend.position = "none") +       transition_time(t_state) animate(p, fps=1) 

Also there you can specify output format such as png, jpeg, svg.