Why does this gganimate code locked binding error?

Question

I'm using gganimate for the first time and I'm just trying to run the example code from the github, which is this:

library(ggplot2)
library(gganimate)
ggplot(mtcars, aes(factor(cyl), mpg)) + 
geom_boxplot() + 
# Here comes the gganimate code
transition_states(
gear,
transition_length = 2,
state_length = 1
) +
enter_fade() + 
exit_shrink() +
ease_aes('sine-in-out')

But I get an error when I try to run it. (It's the same error I try to do anything with gganimate.) It's this:

Error in gifski_first_error <<- FALSE : 
cannot change value of locked binding for 
'gifski_first_error'

Thanks!

Answer 1

I had a similar issue. Try installing the "gifski" and "png" packages, then running the provided code.

The error happens because gifski_renderer() is the current default renderer.

Go here for more information: https://github.com/thomasp85/gganimate/commit/8248357809860c0e1a90eaf1f2ac1cdee1a95a64