如何告诉R在散点图上用颜色填充圆点？

Question

我想用颜色填充散点图上的实心圆点.我试过这个:

>  plot(dframe1$TV~dframe1$Books)
>  xlab="Number of books read per month"
>  plot(dframe1$TV~dframe1$Books,
          xlab="Number of books read per month")
> plot(dframe1$TV~dframe1$Books,
         xlab="Number of books read per month",
         ylab="Hours of TV watched per week",
         main="Associations between time spent watching TV and reading",
         col.main="red",
         cex=1.5,
         pch=21,
         bg=”light green”)
 Error: unexpected input in:
"pch=21,bg=”"

这是行不通的.我很感激建议/帮助.:)

Answer 1

颜色名称没有空格,请尝试"lightgreen"改为

例

set.seed(1) # some random data
x <- rnorm(20, 5)
y <- 2 + .78*x + rnorm(20)
plot(y~x, pch=21,  bg="lightgreen")

产生: