plot.new has not been called yet

Question

Why does this happen?

plot(x,y)
yx.lm <- lm(y ~ x)
lines(x, predict(yx.lm), col=\"red\")

Error in plot.xy(xy.coords

Answer 1

If someone is using print function (for example, with mtext), then firstly depict a null plot:

plot(0,type='n',axes=FALSE,ann=FALSE)

and then print with newpage = F

print(data, newpage = F)