two dimensional brownian bridge animation
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library(tidyverse) | |
library(e1071) | |
library(gganimate) | |
# parameters for the simulation | |
ntimes <- 100 | |
nseries <- 20 | |
# construct tibble storing simulation | |
tbl <- tibble( | |
Time = rep(1:ntimes, nseries), | |
Horizontal = replicate(nseries, c(0,rbridge(1,ntimes-1))) %>% as.vector(), | |
Vertical = replicate(nseries, c(0,rbridge(1,ntimes-1))) %>% as.vector(), | |
Series = gl(nseries, ntimes) | |
) | |
# gganimate | |
pic <- tbl %>% | |
ggplot(aes( | |
x = Horizontal, | |
y = Vertical, | |
colour = Series)) + | |
geom_point(show.legend = FALSE, | |
size = 5, alpha = .6) + | |
theme(axis.title.x=element_blank(), | |
axis.text.x=element_blank(), | |
axis.ticks.x=element_blank()) + | |
theme(axis.title.y=element_blank(), | |
axis.text.y=element_blank(), | |
axis.ticks.y=element_blank()) + | |
transition_time(time = Time) + | |
ease_aes('linear') + | |
shadow_wake(.1) | |
# create | |
pic %>% animate(nframes = 500, fps = 20) | |
anim_save("~/Desktop/bridge.gif") |
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djnavarro commentedAug 24, 2018