I would like to visualize to find out if my model is normally distributed

I used that code

zh <- ch %>% filter(ch$Region=="1")
model <- lm(ratiopermonth~Greenspace, data = zh)
qqline(rstandard(model))

But I got that error messages

error in int_abline(a = a, b = b, h = h, v = v, untf = untf, ...) : plot.new has not been called yet

What is wrong?

CodePudding user response：

qqline is to be used after qqnorm.

r <- rstandard(model)
qqnorm(r)
qqline(r)