作者列表中的 R 林图上标

Question

我想创建一个森林图，我必须将引用作为上标放在森林图中。

我尝试了几件事。

假设这在我的作者列表中 en 参考文献

aut<- c("a, 2018", "c, 2018", "v, 2018", "f, 2018", "f, 2017", 
"f, 2015", "y, 2014","ya, 2014","y, 2014","j, 2013", "j, 2011",
"j, 2011","h, 2011", "g, 2011","e, 2010","r, 2008","f, 2008",
"gh, 2007","h, 2006","h, 2005","h, 2004","h, 2003",
"h, 2002", "g, 2002","f, 2002","f, 2001","f, 2001", "208136/016, 2001", "208136/007, 2001",
"f, 2000","f, 2000", "g, 1999","g, 1999", "g, 1998",
"d , 1998","g, 1998","go, 1997","g, 1995","g, 1994",
"r, 1991","r, 1989","r, 1988","r, 1987","r, 1983",
"g, 1982","g, 1981","g, 1975","g, 1975")
ref<-as.character(seq(1:48))

我尝试了以下方法：

aut2<-parse(text(paste(expression(aut,"^",ref))))

但是我得到一个错误：

Error in parse(text(paste(expression(aut, "^", number)))) : 
'file' must be a character string or connection
In addition: Warning message:
In xy.coords(x, y, recycle = TRUE, setLab = FALSE) :
NAs introduced by coercion

我也尝试了表达，但也没有用。

谁能帮我？

谢谢！

Answer 1

所以我找到了一个解决方案。不是最漂亮，但它确实可以解决问题，我没有心情寻找一些优雅的东西。

aut<-list(expression("author,2011"^2,.. etc)

其中 2 是引用。

更重要的是找到我需要的正确格式，以便在森林绘图函数中将东西放在一起

我希望这也能帮助其他人:)