r - 在 facetwrap ggplot2 中标注 hline

Question

我试图在我的 ggplot 中用每个 facet 的值标记hline。 facet_wrap 显示几个Ratings，并且 hline 值来自Benchmark. 我曾尝试label=在geom_hline中使用，但这不起作用。我将不胜感激有关如何解决此问题的任何帮助和/或建议。

下面是一个示例代码来说明我的观点。先感谢您。

Rating = as.factor(c("A partner", "Approachable", "Arrogant", "Exciting"))
A1 = as.integer(c(38,53,42,40))
A2 = as.integer(c(40,41,55,35))
A3 = as.integer(c(43,57,11,23))
A4 = as.integer(c(56,36,48,50))
Benchmark = as.integer(c(50,20,64,43))

df_full <- data.frame(Rating, A1, A2, A3, A4, Benchmark)
df <- df_full[,c(1:5)]

library(reshape2)
df_long <- melt(df, id = "Rating")

library(ggplot2)

p<-ggplot(data=df_long, aes(x=variable, y=value, fill = variable, label = value)) +
  #Order ratings
  facet_wrap(factor(Rating, levels = c(   "A partner"        
                                          ,"Approachable"     
                                          ,"Exciting"         
                                          ,"Arrogant"))~., scales = "free") +
  geom_bar(stat="identity") +  
  geom_text (aes()
             , hjust = -0.5
             , size = 5
             ,position = position_dodge(width = -1)) +

  geom_hline(data = df_full
             , aes(yintercept = as.integer(Benchmark))
             , color = "black"
             , linetype="dashed") +
  coord_flip() +
  ylim(0, 100)
p

Answer 1

也许第二个geom_text：

# Using OPs provided data

library(ggplot2)
Rating <- factor(Rating, Rating)
ggplot(df_long, aes(variable, value, label = value)) +
    geom_bar(aes(fill = variable), stat = "identity") +  
    geom_text(hjust = -0.5, position = position_dodge(width = -1), size = 5) +
    geom_text(data = df_full, aes(1, Benchmark, label = Benchmark), 
              vjust = 2, hjust = -0.2) +
    geom_hline(data = df_full, aes(yintercept = Benchmark), 
               linetype = "dashed") +
    facet_wrap(~ Rating, scales = "free") +
    coord_flip(ylim = c(0, 100))