在R中更改绘图条的颜色 库（ggplot2） df

我假设您想要更改条的颜色。然后，您需要指定

geom\u col

的

fill

选项

library(ggplot2)

df <- data.frame(trt=c("TAVERN","Long Term Care","Grocery Store","Restaurant"),
                 outcome=c("a","b","c","d"))

ggplot(df,aes(trt, outcome)) + 
  geom_col() +
  geom_point(colour = 'red') +
  ggtitle("Failing rate in different facility types") + 
  labs(x="Facility type",y="Failing rate") + 
  theme(panel.background = element_blank()) +
  scale_color_manual(values = c("purple","green", "red", "orange"))

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您想更改条形或圆点的颜色吗？如果您想更改所需的条形图，您需要

缩放\u填充\u手动（）

您还没有告诉ggplot给什么颜色或颜色应该来自哪里。在

aes

调用中，需要为颜色分配一些变量。另外，请记住，条形图有填充，因此您的色阶不会影响条形图的填充，就像@Mako212所说的那样。

library(ggplot2)
df <- data.frame(trt=c("TAVERN","Long Term Care","Grocery Store","Restaurant"),
                 outcome=c("a","b","c","d"))
ggplot(df,aes(trt, outcome)) + 
  geom_col(fill=c("purple","green", "red", "orange")) + 
  geom_point(colour = 'red') + 
  ggtitle("Failing rate in different facility types") +
  labs(x="Facility type", y="Failing rate") +
  theme(panel.background = element_blank())

ggplot(df,aes(trt, outcome, fill=trt)) +
  geom_col() +
  geom_point(colour = 'red') + 
  ggtitle("Failing rate in different facility types") +
  labs(x="Facility type", y="Failing rate") +
  theme(panel.background = element_blank()) +
  scale_fill_manual(values = c("purple","green", "red", "orange"))