How to connect dots where there are missing values?

Question

lets take this example:

       test=c(1,5,NA,5,4,1,NA,3,3,5,4,2)

      plot(test,type=\"l\")

This will plot test but will not connect the

Answer 1

One options is:

plot(na.omit(test), type = "l")

If you want to retain the x-axis going from 1 - length(test) then:

plot(na.omit(cbind(x = seq_along(test), y = test)), type = "l")