CODEWITHSUNDEEP
rggplot2gganimate
sbarbarotta
sbarbarotta

Reputation: 37

Using gganimate with geom_point and geom_line

working with nfl data here.. trying gganimate for the first time... trying to use geom_point and geom_line but geom_line will not appear..

data frame here..

week = c(1,2,3,4,5,6,8,9,10,11,12,13,14,15,16,17)
plays= c(9,10,5,3,4,4,3,5,6,5,11,12,6,11,7,3)
mean_epa= c(.67, .27, -.5, -1.09, -.3, .68, -.72, -.32, 1.03, 1.05, .56, .17, -.61, -.05, -.14, 1.5)
CLEdrive1b <- data.frame(week,plays,mean_epa)

within week variable, 7 is missing (because browns did not have game week 7)... not sure if that is causing issues?

my first attempt below

p <- ggplot(CLEdrive1b, aes(x=as.factor(week),y=mean_epa)) +
  theme_minimal() +
  geom_point(aes(group = seq_along(week)), color = "orange", size = 4) +
  geom_line(alpha = 0.5)+
  transition_reveal(week)+
  geom_text(aes(label = mean_epa))+
  xlab("Week") +
  ylab("EPA/Play") +
  labs(title="Browns Opening Drives",
       subtitle = "EPA/Drive by Week",
       caption="Data from nflscrapR")+
  theme(axis.title = element_text(size = 10),
        axis.text = element_text(size = 9),
        plot.title = element_text(size = 15),
        plot.subtitle = element_text(size = 10),
        plot.caption = element_text(size = 8))

animate(p)

result for above code

alternative method I tried.. 

pi <- ggplot(CLEdrive1b, aes(week,y=mean_epa)) +
  theme_minimal() +
  geom_point(aes(group = seq_along(week)), color = "orange", size = 4) +
  geom_line(alpha = 0.5)+
  transition_reveal(week)+
  geom_text(aes(label = mean_epa))+
  xlab("Week") +
  ylab("EPA/Play") +
  labs(title="Browns Opening Drives",
       subtitle = "EPA/Drive by Week",
       caption="Data from nflscrapR")+
  theme(axis.title = element_text(size = 10),
        axis.text = element_text(size = 9),
        plot.title = element_text(size = 15),
        plot.subtitle = element_text(size = 10),
        plot.caption = element_text(size = 8))

animate(pi)

result for alternative method

removed as.factor from x variable (week).. and geom_line appears! but x-axis loses labels I am seeking and geom_text stops performing how it was above..

thank you for spending time to help...

Upvotes: 3

Views: 2421

Answers (1)

tjebo
tjebo

Reputation: 23807

The problem is that when converting it to factors, ggplot doesn't "know" any more how to group the week variable, and does not connect the observations any more. Adding aes(group = 1) to your geom_line is all you need. 

library(gganimate)
#> Loading required package: ggplot2
library(ggplot2)
week = c(1,2,3,4,5,6,8,9,10,11,12,13,14,15,16,17)
plays= c(9,10,5,3,4,4,3,5,6,5,11,12,6,11,7,3)
mean_epa= c(.67, .27, -.5, -1.09, -.3, .68, -.72, -.32, 1.03, 1.05, .56, .17, -.61, -.05, -.14, 1.5)
CLEdrive1b <- data.frame(week,plays,mean_epa)

p <- ggplot(CLEdrive1b, aes(x=as.factor(week),y=mean_epa)) +
  geom_point(aes(group = seq_along(week)), color = "orange", size = 4) +
  geom_line(alpha = 0.5, aes(group = 1))+
  transition_reveal(week)+
  geom_text(aes(label = mean_epa))

animate(p)

Created on 2020-02-03 by the reprex package (v0.3.0)

Upvotes: 2

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