从ggplot2中的geom_smooth中删除线条

Question

我试图从geom_smooth中删除回归线，只保留置信区间。我尝试了size = 0，size = NULL和size = NA，但都没有效果。有没有人知道的简单解决方法？

baseball <- ddply(x, .(id), transform, bat.avg = h/ab)
hank <- subset(baseball, id == 'aaronha01')
ggplot(hank, aes(x = year, y = bat.avg)) +
  geom_line(size = 1.2, color = '#336699') +
  geom_smooth(fill = '#bf3030', size = NA) +
  labs(x = '', y = '')

Answer 1

您可以在linetype=0内设置geom_smooth()以删除行。

ggplot(mtcars,aes(wt,mpg))+geom_smooth(linetype=0)

Answer 2

设置size=0也会删除该行。显然size= NA也是如此。

ggplot(mtcars,aes(wt,mpg))+geom_smooth(size=0)