R：更改geom_bar中的条形标签

只需将新labels的x变量

library(tidyverse)  

ggplot(myData, aes(x = fct_reorder(x, -y), y = y)) + 
  geom_col(width = 0.5) +
  scale_x_discrete(breaks = c("windows", "macos", "html5"),
                   labels = c("Windows", "MacOS", "HTML5"))

# or 
my_x_labels <- setNames(c("Windows", "MacOS", "HTML5"),
                        c("windows", "macos", "html5"))
ggplot(myData, aes(x = fct_reorder(x, -y), y = y)) + 
  geom_col(width = 0.5) +
  scale_x_discrete(labels = my_x_labels) +
  theme_minimal()

# or
myData <- myData %>% 
  mutate(x = factor(x, 
                    levels = c("windows", "macos", "html5"),
                    labels = c("Windows", "MacOS", "HTML5")))

ggplot(myData, aes(x = fct_reorder(x, -y), y = y)) + 
  geom_col(width = 0.5)

^{由reprex软件包（v0.3.0）创建于2019-11-10}