geom_line - different colour in the same line

Question

hi I have a question on geom_line.

what i want to do is, for the same line, have different colour segments according to some filter apply to another variable i.e not

Answer 1

Is this what you want?

time <- seq (1,7,1)
var1 <- c(3,5,7,2,3,2,8)
var2 <- c(2,4,18,16,12,3,2)
DF <- data.frame(time, var1, var2)

ggplot(DF, aes(time, var1, colour=(var2>10))) + 
  geom_line(aes(group=1))