我尝试用希腊字母kappa来标记geom_tile中的tiles,如下所示:
kappa = value
我尝试使用expression()和bquote(),但无法找到使其正常工作的方法。df = data.frame(x = letters[1:10],y = letters[11:20], value = 1:10)
p = ggplot(df, aes(x = x, y = y)) +
geom_tile()+geom_text(aes(label= paste("k = ",value,"")), color = "white")
p
[![enter image description here][1]][1]
[1]: https://istack.dev59.com/5bDLv.webp
paste("\u03f0 =", value)
。 - Allan Cameron