ggplot2散点图color参数可以填充图形，设置了shape以后就变成了边框颜色，怎样设置...

zheshicaidao

ggplot(data = mtcars,aes(wt,mpg)) + geom_point(size = 5,color = "red",shape = 2)
ggplot(data = mtcars,aes(wt,mpg)) + geom_point(size = 5,color = "red")