條形 Plot 3 個自變量合一 plot

Question

我的 df 看起來像這樣：

Training_Task <- c("Imag", "Imag", "Imag", "Imag", "Rephrasing", "Rephrasing", "Rephrasing", "Rephrasing")
emotionality <- c("emo", "neu", "emo", "neu", "emo", "neu", "emo", "neu")
target_type <- c("novel", "novel", "pseudo", "pseudo", "novel", "novel", "pseudo", "pseudo")
acc <- c(93, 95, 97, 98, 96, 94, 92, 90)
df <- data.frame(Training_Task, emotionality, target_type, acc)

現在我想創建一個看起來像這樣的條形 plot：

plot = ggplot(df, aes(fill =Training_Task, y=acc, x=target_type))

但我希望通過飽和的情感條（情感 = emo）和蒼白的中性條（情感 = neu）來添加 IV 情感。

有沒有辦法做到這一點？

Answer 1

您可以在審美中使用alpha並將 position 設置為dodge ：

ggplot(df) +
  geom_bar(aes(fill = Training_Task, y=acc, x=target_type, alpha = emotionality), stat = 'identity', position = "dodge") +
  theme_minimal() +
  scale_alpha_discrete(range = c(1,0.4))