一行函数中的ggplot axis.title描述

Question

I have a problem with my own function. I mean, I create a function in which arguments will be name of axis.title.

describe_axis <- function(x_axis, y_axis){
  y <- y_axis
  x <- x_axis
    xlab(x)+
    ylab(y)
}

If I use it in normal ggplot code:

ggplot(mtcars, aes(wt, qsec))+
   geom_point()+
   describe_axis("X-axis","Y-axis")

I get an error non-numeric argument to binary operator . How to manage with it?

Answer 1

如果您要标记轴：

ggplot(mtcars, aes(wt, qsec))+ geom_point()+ xlab("X-axis") + ylab("Y-axis")