使用美学和geom_text时，从图例中删除“a”

Question

如何从此代码生成的图例中删除字母“a”？如果我删除了geom_text，那么'a'字母将不会显示在图例中。不过我想保留geom_text。

ggplot(data = iris, aes(x = Sepal.Length, y=Sepal.Width, shape = Species, colour = Species)) + 

   geom_point() + 

   geom_text(aes(label = Species))

Answer 1

设置show.legend = FALSE为geom_text：ggplot(data = iris,       aes(x = Sepal.Length, y = Sepal.Width, colour = Species, shape = Species, label = Species)) +     geom_point() +    geom_text(show.legend = FALSE)该参数show_guide将名称更改为show.legendin ggplot2 2.0.0（请参阅发布新闻）。预ggplot2 2.0.0：有了show_guide = FALSE这样的...ggplot( data=iris, aes(x=Sepal.Length, y=Sepal.Width , colour = Species , shape = Species, label = Species ) , size=20 ) + geom_point()+geom_text( show_guide  = F )