r - 保持点在gganimate

Question

我想使用 gganimate 记录测试情况下的进度:
我已经走了这么远:

library(tidyverse)
library(gganimate)

data <- tribble(~user, ~agree, ~accord, ~messung,
            "1", .8, .9, 1,
            "2",.7, .8, 1,
           "3", .6, .9, 1)
data2 <- tribble(~user, ~agree2, ~accord2, ~messung2,
           "1",  .4, .7, 2,
            "2", .5, .9, 2,
            "3", .9, .9, 2)

data%>%
left_join(data2)%>%
 mutate(user = as.numeric(user))%>%
 ggplot(aes(x = accord, y = agree))+
 geom_point(aes(fill = "grey"), color = "grey", size = 2)+
 geom_point(aes(x = accord2, y = agree2), color = "green",
         size = 2)+
 xlim(0,1)+
 ylim(0,1)+
 geom_segment(aes(x = accord,
               y = agree,
               xend = accord2,
               yend = agree2),
           size = 0.5, arrow = arrow(type="closed", length =
                                       unit(.08, "inches"), angle = 30), 
color = "grey")+
theme_minimal()+
guides(fill=FALSE, color=FALSE)+
transition_manual(user)

起初，颜色和表现是次要的。学习如何将点一个接一个地制作动画而不会使之前的点再次消失很重要吗？
欢迎任何帮助!谢谢

Answer 1

我无法使用 transition_manual 使其工作，但您可以使用 transition_states 获得所需的输出。如果你不想过渡，你可以将 transition_length 设置为零。

data%>%
  left_join(data2)%>%
  mutate(user = as.numeric(user)) %>%

  ggplot() +
  geom_point(aes(x = accord,  y = agree),  color = "grey",  size = 2,  fill = "grey") +
  geom_point(aes(x = accord2, y = agree2), color = "green", size = 2)+
  xlim(0,1)+ ylim(0,1)+
  geom_segment(aes(x = accord, y = agree, xend = accord2, yend = agree2),
               size = 0.5, color = "grey",
               arrow = arrow(type="closed", length = unit(.08, "inches"), angle = 30))+
  theme_minimal() +
  # Use zero for "transition_length" to remove animation easing altogether
  transition_states(user, transition_length = 1, state_length = 2) +
  # shadow_mark(exclude_layer = 3) # This hides the arrow from animating
  shadow_mark()