ggplot错误-“无法将类‘c(”ScaleContinuousPosition“，"ScaleContinuous"，"Scale"，"ggproto"，’)强制转换为data.frame”

Question

假设我在iris数据上尝试一个非常简单的ggplot图，它看起来像这样：

ggplot(iris, aes(x = Sepal.Length, y = Sepal.Width)) +
  geom_line() +
  theme_minimal() +
  scale_x_continuous(limits = c(5, 8)) %>%
  annotate(geom = "text", x = 6, y = 5, label = "We Love Flowers!", color = "#619CFF", size = 8)

出于某种原因，它会抛出这个错误：

Error in as.data.frame.default(x[[i]], optional = TRUE) : 
  cannot coerce class ‘c("ScaleContinuousPosition", "ScaleContinuous", "Scale", "ggproto", ’ to a data.frame

怎么回事？到底怎么回事？

Answer 1

听着，我们都经历过。在dplyr和ggplot之间切换，忘记在%>%管道和+操作符之间切换。发生在我们最好的人身上！

修正后的代码如下：

ggplot(iris, aes(x = Sepal.Length, y = Sepal.Width)) +
  geom_line() +
  theme_minimal() +
  scale_x_continuous(limits = c(5, 8)) +
  annotate(geom = "text", x = 6, y = 5, label = "We Love Flowers!", color = "#619CFF", size = 8)