图书馆(GG2)
ds_mt <-
mtcars %>%
group_by(cyl, am) %>%
summarise(mpg = mean(mpg)) %>%
ungroup() %>%
mutate_at(vars(cyl, am), funs(as.factor))
ds_mt %>%
ggplot(aes(x = cyl, fill = as.factor(am), y = mpg, label = am)) +
geom_col(position = position_dodge()) +
geom_label(position = position_dodge(width = .9))
# Adding fill argument to geom_label() nullifies the position argument
ds_mt %>%
ggplot(aes(x = cyl, fill = as.factor(am), y = mpg, label = am)) +
geom_col(position = position_dodge()) +
geom_label(fill = "white", position = position_dodge(width = .9))
ds_mt %>%
ggplot(aes(x = cyl, fill = as.factor(am), y = mpg, label = am)) +
geom_col(position = position_dodge()) +
geom_label(position = position_dodge(width = .9), fill = "white")
# no problems with geom_text
ds_mt %>%
ggplot(aes(x = cyl, fill = as.factor(am), y = mpg, label = am)) +
geom_col(position = position_dodge()) +
geom_text(position = position_dodge(width = .9), color = "blue")